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Finding the Fourth Proportional to 63,589.42, 87,753.74 and 39,729.93

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Solution

The fourth proportional to 63,589.42, 87,753.74 and 39,729.93 is: 54,827.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,589.42 : 87,753.74 = 39,729.93 : x
  2. Step 2: Convert to fraction form
    63,589.42/87,753.74 = 39,729.93/x
  3. Step 3: Cross multiply
    63,589.42x = 87,753.74 × 39,729.93
  4. Step 4: Simplify right side
    63,589.42x = 3,486,449,748.79
  5. Step 5: Solve for x
    x = 3,486,449,748.79/63,589.42
  6. Step 6: Final answer
    x = 54,827.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.