Home / 51,988.20-77,982.30-28,660.20

Finding the Fourth Proportional to 51,988.20, 77,982.30 and 28,660.20

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Solution

The fourth proportional to 51,988.20, 77,982.30 and 28,660.20 is: 42,990.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,988.20 : 77,982.30 = 28,660.20 : x
  2. Step 2: Convert to fraction form
    51,988.20/77,982.30 = 28,660.20/x
  3. Step 3: Cross multiply
    51,988.20x = 77,982.30 × 28,660.20
  4. Step 4: Simplify right side
    51,988.20x = 2,234,988,314.46
  5. Step 5: Solve for x
    x = 2,234,988,314.46/51,988.20
  6. Step 6: Final answer
    x = 42,990.30

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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.