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Finding the Fourth Proportional to 91,737, 137,625.26 and 28,555.79

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Solution

The fourth proportional to 91,737, 137,625.26 and 28,555.79 is: 42,839.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,737 : 137,625.26 = 28,555.79 : x
  2. Step 2: Convert to fraction form
    91,737/137,625.26 = 28,555.79/x
  3. Step 3: Cross multiply
    91,737x = 137,625.26 × 28,555.79
  4. Step 4: Simplify right side
    91,737x = 3,929,997,192.35
  5. Step 5: Solve for x
    x = 3,929,997,192.35/91,737
  6. Step 6: Final answer
    x = 42,839.83

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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.