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Finding the Fourth Proportional to 67,892.06, 101,805.16 and 39,821.28

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Solution

The fourth proportional to 67,892.06, 101,805.16 and 39,821.28 is: 59,712.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,892.06 : 101,805.16 = 39,821.28 : x
  2. Step 2: Convert to fraction form
    67,892.06/101,805.16 = 39,821.28/x
  3. Step 3: Cross multiply
    67,892.06x = 101,805.16 × 39,821.28
  4. Step 4: Simplify right side
    67,892.06x = 4,054,011,781.80
  5. Step 5: Solve for x
    x = 4,054,011,781.80/67,892.06
  6. Step 6: Final answer
    x = 59,712.61

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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.