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Finding the Fourth Proportional to 86,116.95, 129,119.31 and 29,952.75

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Solution

The fourth proportional to 86,116.95, 129,119.31 and 29,952.75 is: 44,909.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,116.95 : 129,119.31 = 29,952.75 : x
  2. Step 2: Convert to fraction form
    86,116.95/129,119.31 = 29,952.75/x
  3. Step 3: Cross multiply
    86,116.95x = 129,119.31 × 29,952.75
  4. Step 4: Simplify right side
    86,116.95x = 3,867,478,412.60
  5. Step 5: Solve for x
    x = 3,867,478,412.60/86,116.95
  6. Step 6: Final answer
    x = 44,909.61

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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.