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Finding the Fourth Proportional to 71,657.88, 107,487.90 and 27,287.09

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Solution

The fourth proportional to 71,657.88, 107,487.90 and 27,287.09 is: 40,931.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,657.88 : 107,487.90 = 27,287.09 : x
  2. Step 2: Convert to fraction form
    71,657.88/107,487.90 = 27,287.09/x
  3. Step 3: Cross multiply
    71,657.88x = 107,487.90 × 27,287.09
  4. Step 4: Simplify right side
    71,657.88x = 2,933,032,269.93
  5. Step 5: Solve for x
    x = 2,933,032,269.93/71,657.88
  6. Step 6: Final answer
    x = 40,931.05

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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.