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Finding the Fourth Proportional to 63,239.78, 87,279.64 and 36,381.80

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Solution

The fourth proportional to 63,239.78, 87,279.64 and 36,381.80 is: 50,211.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,239.78 : 87,279.64 = 36,381.80 : x
  2. Step 2: Convert to fraction form
    63,239.78/87,279.64 = 36,381.80/x
  3. Step 3: Cross multiply
    63,239.78x = 87,279.64 × 36,381.80
  4. Step 4: Simplify right side
    63,239.78x = 3,175,390,406.55
  5. Step 5: Solve for x
    x = 3,175,390,406.55/63,239.78
  6. Step 6: Final answer
    x = 50,211.91

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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.