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Finding the Fourth Proportional to 72,084.16, 108,125.96 and 19,493.62

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Solution

The fourth proportional to 72,084.16, 108,125.96 and 19,493.62 is: 29,240.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,084.16 : 108,125.96 = 19,493.62 : x
  2. Step 2: Convert to fraction form
    72,084.16/108,125.96 = 19,493.62/x
  3. Step 3: Cross multiply
    72,084.16x = 108,125.96 × 19,493.62
  4. Step 4: Simplify right side
    72,084.16x = 2,107,766,376.38
  5. Step 5: Solve for x
    x = 2,107,766,376.38/72,084.16
  6. Step 6: Final answer
    x = 29,240.35

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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.