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Finding the Fourth Proportional to 91,613.36, 137,425.44 and 29,279

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Solution

The fourth proportional to 91,613.36, 137,425.44 and 29,279 is: 43,920.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,613.36 : 137,425.44 = 29,279 : x
  2. Step 2: Convert to fraction form
    91,613.36/137,425.44 = 29,279/x
  3. Step 3: Cross multiply
    91,613.36x = 137,425.44 × 29,279
  4. Step 4: Simplify right side
    91,613.36x = 4,023,679,457.76
  5. Step 5: Solve for x
    x = 4,023,679,457.76/91,613.36
  6. Step 6: Final answer
    x = 43,920.23

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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.