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Finding the Fourth Proportional to 63,704.48, 87,905.04 and 38,211.89

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Solution

The fourth proportional to 63,704.48, 87,905.04 and 38,211.89 is: 52,728.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,704.48 : 87,905.04 = 38,211.89 : x
  2. Step 2: Convert to fraction form
    63,704.48/87,905.04 = 38,211.89/x
  3. Step 3: Cross multiply
    63,704.48x = 87,905.04 × 38,211.89
  4. Step 4: Simplify right side
    63,704.48x = 3,359,017,279.40
  5. Step 5: Solve for x
    x = 3,359,017,279.40/63,704.48
  6. Step 6: Final answer
    x = 52,728.12

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1.5x scale

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.