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Finding the Fourth Proportional to 275,585.96, 413,378.79 and 86,062.57

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Solution

The fourth proportional to 275,585.96, 413,378.79 and 86,062.57 is: 129,093.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,585.96 : 413,378.79 = 86,062.57 : x
  2. Step 2: Convert to fraction form
    275,585.96/413,378.79 = 86,062.57/x
  3. Step 3: Cross multiply
    275,585.96x = 413,378.79 × 86,062.57
  4. Step 4: Simplify right side
    275,585.96x = 35,576,439,694.71
  5. Step 5: Solve for x
    x = 35,576,439,694.71/275,585.96
  6. Step 6: Final answer
    x = 129,093.80

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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.