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Finding the Fourth Proportional to 45,231.40, 67,847.10 and 18,927.40

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Solution

The fourth proportional to 45,231.40, 67,847.10 and 18,927.40 is: 28,391.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,231.40 : 67,847.10 = 18,927.40 : x
  2. Step 2: Convert to fraction form
    45,231.40/67,847.10 = 18,927.40/x
  3. Step 3: Cross multiply
    45,231.40x = 67,847.10 × 18,927.40
  4. Step 4: Simplify right side
    45,231.40x = 1,284,169,200.54
  5. Step 5: Solve for x
    x = 1,284,169,200.54/45,231.40
  6. Step 6: Final answer
    x = 28,391.10

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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.