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Finding the Fourth Proportional to 28,031,416.20, 42,047,124.30 and 28,031,416.20

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Solution

The fourth proportional to 28,031,416.20, 42,047,124.30 and 28,031,416.20 is: 42,047,124.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,031,416.20 : 42,047,124.30 = 28,031,416.20 : x
  2. Step 2: Convert to fraction form
    28,031,416.20/42,047,124.30 = 28,031,416.20/x
  3. Step 3: Cross multiply
    28,031,416.20x = 42,047,124.30 × 28,031,416.20
  4. Step 4: Simplify right side
    28,031,416.20x = 1,178,640,441,266,433.50
  5. Step 5: Solve for x
    x = 1,178,640,441,266,433.50/28,031,416.20
  6. Step 6: Final answer
    x = 42,047,124.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.