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Finding the Fourth Proportional to 72,437.53, 108,687.50 and 39,181

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Solution

The fourth proportional to 72,437.53, 108,687.50 and 39,181 is: 58,788.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,437.53 : 108,687.50 = 39,181 : x
  2. Step 2: Convert to fraction form
    72,437.53/108,687.50 = 39,181/x
  3. Step 3: Cross multiply
    72,437.53x = 108,687.50 × 39,181
  4. Step 4: Simplify right side
    72,437.53x = 4,258,484,937.50
  5. Step 5: Solve for x
    x = 4,258,484,937.50/72,437.53
  6. Step 6: Final answer
    x = 58,788.38

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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.