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Finding the Fourth Proportional to 86,358.17, 129,349.71 and 41,891.46

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Solution

The fourth proportional to 86,358.17, 129,349.71 and 41,891.46 is: 62,746.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,358.17 : 129,349.71 = 41,891.46 : x
  2. Step 2: Convert to fraction form
    86,358.17/129,349.71 = 41,891.46/x
  3. Step 3: Cross multiply
    86,358.17x = 129,349.71 × 41,891.46
  4. Step 4: Simplify right side
    86,358.17x = 5,418,648,202.48
  5. Step 5: Solve for x
    x = 5,418,648,202.48/86,358.17
  6. Step 6: Final answer
    x = 62,746.22

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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.