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Finding the Fourth Proportional to 74,691.90, 103,079.92 and 45,632.70

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Solution

The fourth proportional to 74,691.90, 103,079.92 and 45,632.70 is: 62,976.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,691.90 : 103,079.92 = 45,632.70 : x
  2. Step 2: Convert to fraction form
    74,691.90/103,079.92 = 45,632.70/x
  3. Step 3: Cross multiply
    74,691.90x = 103,079.92 × 45,632.70
  4. Step 4: Simplify right side
    74,691.90x = 4,703,815,065.38
  5. Step 5: Solve for x
    x = 4,703,815,065.38/74,691.90
  6. Step 6: Final answer
    x = 62,976.24

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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.