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Finding the Fourth Proportional to 73,764, 110,691.36 and 38,728.80

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Solution

The fourth proportional to 73,764, 110,691.36 and 38,728.80 is: 58,117.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,764 : 110,691.36 = 38,728.80 : x
  2. Step 2: Convert to fraction form
    73,764/110,691.36 = 38,728.80/x
  3. Step 3: Cross multiply
    73,764x = 110,691.36 × 38,728.80
  4. Step 4: Simplify right side
    73,764x = 4,286,943,543.17
  5. Step 5: Solve for x
    x = 4,286,943,543.17/73,764
  6. Step 6: Final answer
    x = 58,117.02

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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.