Home / 77,935.11-107,550.38-42,125.12

Finding the Fourth Proportional to 77,935.11, 107,550.38 and 42,125.12

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Solution

The fourth proportional to 77,935.11, 107,550.38 and 42,125.12 is: 58,132.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,935.11 : 107,550.38 = 42,125.12 : x
  2. Step 2: Convert to fraction form
    77,935.11/107,550.38 = 42,125.12/x
  3. Step 3: Cross multiply
    77,935.11x = 107,550.38 × 42,125.12
  4. Step 4: Simplify right side
    77,935.11x = 4,530,572,634.42
  5. Step 5: Solve for x
    x = 4,530,572,634.42/77,935.11
  6. Step 6: Final answer
    x = 58,132.63

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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.