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Finding the Fourth Proportional to 60,613.50, 90,976.31 and 30,648.87

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Solution

The fourth proportional to 60,613.50, 90,976.31 and 30,648.87 is: 46,001.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,613.50 : 90,976.31 = 30,648.87 : x
  2. Step 2: Convert to fraction form
    60,613.50/90,976.31 = 30,648.87/x
  3. Step 3: Cross multiply
    60,613.50x = 90,976.31 × 30,648.87
  4. Step 4: Simplify right side
    60,613.50x = 2,788,321,104.42
  5. Step 5: Solve for x
    x = 2,788,321,104.42/60,613.50
  6. Step 6: Final answer
    x = 46,001.65

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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.