Home / 94,031.70-129,691.18-65,350.78

Finding the Fourth Proportional to 94,031.70, 129,691.18 and 65,350.78

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Solution

The fourth proportional to 94,031.70, 129,691.18 and 65,350.78 is: 90,133.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,031.70 : 129,691.18 = 65,350.78 : x
  2. Step 2: Convert to fraction form
    94,031.70/129,691.18 = 65,350.78/x
  3. Step 3: Cross multiply
    94,031.70x = 129,691.18 × 65,350.78
  4. Step 4: Simplify right side
    94,031.70x = 8,475,419,772.12
  5. Step 5: Solve for x
    x = 8,475,419,772.12/94,031.70
  6. Step 6: Final answer
    x = 90,133.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.