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Finding the Fourth Proportional to 63,138.42, 87,130.85 and 34,843.91

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Solution

The fourth proportional to 63,138.42, 87,130.85 and 34,843.91 is: 48,084.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,138.42 : 87,130.85 = 34,843.91 : x
  2. Step 2: Convert to fraction form
    63,138.42/87,130.85 = 34,843.91/x
  3. Step 3: Cross multiply
    63,138.42x = 87,130.85 × 34,843.91
  4. Step 4: Simplify right side
    63,138.42x = 3,035,978,885.75
  5. Step 5: Solve for x
    x = 3,035,978,885.75/63,138.42
  6. Step 6: Final answer
    x = 48,084.49

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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.