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Finding the Fourth Proportional to 86,672.59, 129,902.55 and 49,264

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Solution

The fourth proportional to 86,672.59, 129,902.55 and 49,264 is: 73,835.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,672.59 : 129,902.55 = 49,264 : x
  2. Step 2: Convert to fraction form
    86,672.59/129,902.55 = 49,264/x
  3. Step 3: Cross multiply
    86,672.59x = 129,902.55 × 49,264
  4. Step 4: Simplify right side
    86,672.59x = 6,399,519,223.20
  5. Step 5: Solve for x
    x = 6,399,519,223.20/86,672.59
  6. Step 6: Final answer
    x = 73,835.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.