Home / 86,116.60-129,130.61-38,691.04

Finding the Fourth Proportional to 86,116.60, 129,130.61 and 38,691.04

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Solution

The fourth proportional to 86,116.60, 129,130.61 and 38,691.04 is: 58,016.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,116.60 : 129,130.61 = 38,691.04 : x
  2. Step 2: Convert to fraction form
    86,116.60/129,130.61 = 38,691.04/x
  3. Step 3: Cross multiply
    86,116.60x = 129,130.61 × 38,691.04
  4. Step 4: Simplify right side
    86,116.60x = 4,996,197,596.73
  5. Step 5: Solve for x
    x = 4,996,197,596.73/86,116.60
  6. Step 6: Final answer
    x = 58,016.66

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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.