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Finding the Fourth Proportional to 73,387.80, 110,081.70 and 38,319.30

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Solution

The fourth proportional to 73,387.80, 110,081.70 and 38,319.30 is: 57,478.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,387.80 : 110,081.70 = 38,319.30 : x
  2. Step 2: Convert to fraction form
    73,387.80/110,081.70 = 38,319.30/x
  3. Step 3: Cross multiply
    73,387.80x = 110,081.70 × 38,319.30
  4. Step 4: Simplify right side
    73,387.80x = 4,218,253,686.81
  5. Step 5: Solve for x
    x = 4,218,253,686.81/73,387.80
  6. Step 6: Final answer
    x = 57,478.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.