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Finding the Fourth Proportional to 86,476.60, 129,617.70 and 44,340.40

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Solution

The fourth proportional to 86,476.60, 129,617.70 and 44,340.40 is: 66,460.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,476.60 : 129,617.70 = 44,340.40 : x
  2. Step 2: Convert to fraction form
    86,476.60/129,617.70 = 44,340.40/x
  3. Step 3: Cross multiply
    86,476.60x = 129,617.70 × 44,340.40
  4. Step 4: Simplify right side
    86,476.60x = 5,747,300,665.08
  5. Step 5: Solve for x
    x = 5,747,300,665.08/86,476.60
  6. Step 6: Final answer
    x = 66,460.76

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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.