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Finding the Fourth Proportional to 86,589.95, 129,861.09 and 29,663.01

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Solution

The fourth proportional to 86,589.95, 129,861.09 and 29,663.01 is: 44,486.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,589.95 : 129,861.09 = 29,663.01 : x
  2. Step 2: Convert to fraction form
    86,589.95/129,861.09 = 29,663.01/x
  3. Step 3: Cross multiply
    86,589.95x = 129,861.09 × 29,663.01
  4. Step 4: Simplify right side
    86,589.95x = 3,852,070,811.28
  5. Step 5: Solve for x
    x = 3,852,070,811.28/86,589.95
  6. Step 6: Final answer
    x = 44,486.35

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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.