Home / 86,392.31-129,462.10-38,302.61

Finding the Fourth Proportional to 86,392.31, 129,462.10 and 38,302.61

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Solution

The fourth proportional to 86,392.31, 129,462.10 and 38,302.61 is: 57,397.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,392.31 : 129,462.10 = 38,302.61 : x
  2. Step 2: Convert to fraction form
    86,392.31/129,462.10 = 38,302.61/x
  3. Step 3: Cross multiply
    86,392.31x = 129,462.10 × 38,302.61
  4. Step 4: Simplify right side
    86,392.31x = 4,958,735,583.01
  5. Step 5: Solve for x
    x = 4,958,735,583.01/86,392.31
  6. Step 6: Final answer
    x = 57,397.88

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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.