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Finding the Fourth Proportional to 95,560.71, 142,729.99 and 86,541.39

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Solution

The fourth proportional to 95,560.71, 142,729.99 and 86,541.39 is: 129,258.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,560.71 : 142,729.99 = 86,541.39 : x
  2. Step 2: Convert to fraction form
    95,560.71/142,729.99 = 86,541.39/x
  3. Step 3: Cross multiply
    95,560.71x = 142,729.99 × 86,541.39
  4. Step 4: Simplify right side
    95,560.71x = 12,352,051,729.29
  5. Step 5: Solve for x
    x = 12,352,051,729.29/95,560.71
  6. Step 6: Final answer
    x = 129,258.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.