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Finding the Fourth Proportional to 86,266.35, 129,264.98 and 54,609.53

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Solution

The fourth proportional to 86,266.35, 129,264.98 and 54,609.53 is: 81,829.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,266.35 : 129,264.98 = 54,609.53 : x
  2. Step 2: Convert to fraction form
    86,266.35/129,264.98 = 54,609.53/x
  3. Step 3: Cross multiply
    86,266.35x = 129,264.98 × 54,609.53
  4. Step 4: Simplify right side
    86,266.35x = 7,059,098,883.89
  5. Step 5: Solve for x
    x = 7,059,098,883.89/86,266.35
  6. Step 6: Final answer
    x = 81,829.11

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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.