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Finding the Fourth Proportional to 71,187.89, 106,777.98 and 36,126.63

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Solution

The fourth proportional to 71,187.89, 106,777.98 and 36,126.63 is: 54,187.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,187.89 : 106,777.98 = 36,126.63 : x
  2. Step 2: Convert to fraction form
    71,187.89/106,777.98 = 36,126.63/x
  3. Step 3: Cross multiply
    71,187.89x = 106,777.98 × 36,126.63
  4. Step 4: Simplify right side
    71,187.89x = 3,857,528,575.61
  5. Step 5: Solve for x
    x = 3,857,528,575.61/71,187.89
  6. Step 6: Final answer
    x = 54,187.99

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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.