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Finding the Fourth Proportional to 63,138.98, 87,131.48 and 34,846.40

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Solution

The fourth proportional to 63,138.98, 87,131.48 and 34,846.40 is: 48,087.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,138.98 : 87,131.48 = 34,846.40 : x
  2. Step 2: Convert to fraction form
    63,138.98/87,131.48 = 34,846.40/x
  3. Step 3: Cross multiply
    63,138.98x = 87,131.48 × 34,846.40
  4. Step 4: Simplify right side
    63,138.98x = 3,036,218,404.67
  5. Step 5: Solve for x
    x = 3,036,218,404.67/63,138.98
  6. Step 6: Final answer
    x = 48,087.86

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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.