Home / 74,728.20-112,031.28-34,772.16

Finding the Fourth Proportional to 74,728.20, 112,031.28 and 34,772.16

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Solution

The fourth proportional to 74,728.20, 112,031.28 and 34,772.16 is: 52,129.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,728.20 : 112,031.28 = 34,772.16 : x
  2. Step 2: Convert to fraction form
    74,728.20/112,031.28 = 34,772.16/x
  3. Step 3: Cross multiply
    74,728.20x = 112,031.28 × 34,772.16
  4. Step 4: Simplify right side
    74,728.20x = 3,895,569,593.16
  5. Step 5: Solve for x
    x = 3,895,569,593.16/74,728.20
  6. Step 6: Final answer
    x = 52,129.85

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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.