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Finding the Fourth Proportional to 86,179.70, 129,266.20 and 44,059.30

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Solution

The fourth proportional to 86,179.70, 129,266.20 and 44,059.30 is: 66,087.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,179.70 : 129,266.20 = 44,059.30 : x
  2. Step 2: Convert to fraction form
    86,179.70/129,266.20 = 44,059.30/x
  3. Step 3: Cross multiply
    86,179.70x = 129,266.20 × 44,059.30
  4. Step 4: Simplify right side
    86,179.70x = 5,695,378,285.66
  5. Step 5: Solve for x
    x = 5,695,378,285.66/86,179.70
  6. Step 6: Final answer
    x = 66,087.24

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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.