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Finding the Fourth Proportional to 71,671.91, 107,507.52 and 18,363.78

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Solution

The fourth proportional to 71,671.91, 107,507.52 and 18,363.78 is: 27,545.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,671.91 : 107,507.52 = 18,363.78 : x
  2. Step 2: Convert to fraction form
    71,671.91/107,507.52 = 18,363.78/x
  3. Step 3: Cross multiply
    71,671.91x = 107,507.52 × 18,363.78
  4. Step 4: Simplify right side
    71,671.91x = 1,974,244,445.63
  5. Step 5: Solve for x
    x = 1,974,244,445.63/71,671.91
  6. Step 6: Final answer
    x = 27,545.58

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1.5x scale

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.