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Finding the Fourth Proportional to 63,139.57, 87,140.28 and 36,282

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Solution

The fourth proportional to 63,139.57, 87,140.28 and 36,282 is: 50,073.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,139.57 : 87,140.28 = 36,282 : x
  2. Step 2: Convert to fraction form
    63,139.57/87,140.28 = 36,282/x
  3. Step 3: Cross multiply
    63,139.57x = 87,140.28 × 36,282
  4. Step 4: Simplify right side
    63,139.57x = 3,161,623,638.96
  5. Step 5: Solve for x
    x = 3,161,623,638.96/63,139.57
  6. Step 6: Final answer
    x = 50,073.57

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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.