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Finding the Fourth Proportional to 91,801.56, 137,587.56 and 39,149.64

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Solution

The fourth proportional to 91,801.56, 137,587.56 and 39,149.64 is: 58,675.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,801.56 : 137,587.56 = 39,149.64 : x
  2. Step 2: Convert to fraction form
    91,801.56/137,587.56 = 39,149.64/x
  3. Step 3: Cross multiply
    91,801.56x = 137,587.56 × 39,149.64
  4. Step 4: Simplify right side
    91,801.56x = 5,386,503,442.48
  5. Step 5: Solve for x
    x = 5,386,503,442.48/91,801.56
  6. Step 6: Final answer
    x = 58,675.51

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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.