Home / 56,151.20-77,488.68-31,000.88

Finding the Fourth Proportional to 56,151.20, 77,488.68 and 31,000.88

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Solution

The fourth proportional to 56,151.20, 77,488.68 and 31,000.88 is: 42,781.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,151.20 : 77,488.68 = 31,000.88 : x
  2. Step 2: Convert to fraction form
    56,151.20/77,488.68 = 31,000.88/x
  3. Step 3: Cross multiply
    56,151.20x = 77,488.68 × 31,000.88
  4. Step 4: Simplify right side
    56,151.20x = 2,402,217,270.04
  5. Step 5: Solve for x
    x = 2,402,217,270.04/56,151.20
  6. Step 6: Final answer
    x = 42,781.23

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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.