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Finding the Fourth Proportional to 63,131.04, 87,120 and 34,836

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Solution

The fourth proportional to 63,131.04, 87,120 and 34,836 is: 48,073.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,131.04 : 87,120 = 34,836 : x
  2. Step 2: Convert to fraction form
    63,131.04/87,120 = 34,836/x
  3. Step 3: Cross multiply
    63,131.04x = 87,120 × 34,836
  4. Step 4: Simplify right side
    63,131.04x = 3,034,912,320
  5. Step 5: Solve for x
    x = 3,034,912,320/63,131.04
  6. Step 6: Final answer
    x = 48,073.22

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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.