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Finding the Fourth Proportional to 85,752.61, 128,641.37 and 26,593.04

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Solution

The fourth proportional to 85,752.61, 128,641.37 and 26,593.04 is: 39,893.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,752.61 : 128,641.37 = 26,593.04 : x
  2. Step 2: Convert to fraction form
    85,752.61/128,641.37 = 26,593.04/x
  3. Step 3: Cross multiply
    85,752.61x = 128,641.37 × 26,593.04
  4. Step 4: Simplify right side
    85,752.61x = 3,420,965,286.70
  5. Step 5: Solve for x
    x = 3,420,965,286.70/85,752.61
  6. Step 6: Final answer
    x = 39,893.43

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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.