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Finding the Fourth Proportional to 86,699.88, 130,049.21 and 44,591.70

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Solution

The fourth proportional to 86,699.88, 130,049.21 and 44,591.70 is: 66,887.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,699.88 : 130,049.21 = 44,591.70 : x
  2. Step 2: Convert to fraction form
    86,699.88/130,049.21 = 44,591.70/x
  3. Step 3: Cross multiply
    86,699.88x = 130,049.21 × 44,591.70
  4. Step 4: Simplify right side
    86,699.88x = 5,799,115,134.60
  5. Step 5: Solve for x
    x = 5,799,115,134.60/86,699.88
  6. Step 6: Final answer
    x = 66,887.23

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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.