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Finding the Fourth Proportional to 86,208.75, 129,221.10 and 41,737.95

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Solution

The fourth proportional to 86,208.75, 129,221.10 and 41,737.95 is: 62,562.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,208.75 : 129,221.10 = 41,737.95 : x
  2. Step 2: Convert to fraction form
    86,208.75/129,221.10 = 41,737.95/x
  3. Step 3: Cross multiply
    86,208.75x = 129,221.10 × 41,737.95
  4. Step 4: Simplify right side
    86,208.75x = 5,393,423,810.75
  5. Step 5: Solve for x
    x = 5,393,423,810.75/86,208.75
  6. Step 6: Final answer
    x = 62,562.37

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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.