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Finding the Fourth Proportional to 73,711.50, 101,724.39 and 40,179.66

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Solution

The fourth proportional to 73,711.50, 101,724.39 and 40,179.66 is: 55,449.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,711.50 : 101,724.39 = 40,179.66 : x
  2. Step 2: Convert to fraction form
    73,711.50/101,724.39 = 40,179.66/x
  3. Step 3: Cross multiply
    73,711.50x = 101,724.39 × 40,179.66
  4. Step 4: Simplify right side
    73,711.50x = 4,087,251,403.91
  5. Step 5: Solve for x
    x = 4,087,251,403.91/73,711.50
  6. Step 6: Final answer
    x = 55,449.30

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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.