Home / 77,948.97-107,569.17-42,138.66

Finding the Fourth Proportional to 77,948.97, 107,569.17 and 42,138.66

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Solution

The fourth proportional to 77,948.97, 107,569.17 and 42,138.66 is: 58,151.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,948.97 : 107,569.17 = 42,138.66 : x
  2. Step 2: Convert to fraction form
    77,948.97/107,569.17 = 42,138.66/x
  3. Step 3: Cross multiply
    77,948.97x = 107,569.17 × 42,138.66
  4. Step 4: Simplify right side
    77,948.97x = 4,532,820,681.11
  5. Step 5: Solve for x
    x = 4,532,820,681.11/77,948.97
  6. Step 6: Final answer
    x = 58,151.13

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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.