Home / 86,243.83-129,322.01-39,456.61

Finding the Fourth Proportional to 86,243.83, 129,322.01 and 39,456.61

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Solution

The fourth proportional to 86,243.83, 129,322.01 and 39,456.61 is: 59,164.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,243.83 : 129,322.01 = 39,456.61 : x
  2. Step 2: Convert to fraction form
    86,243.83/129,322.01 = 39,456.61/x
  3. Step 3: Cross multiply
    86,243.83x = 129,322.01 × 39,456.61
  4. Step 4: Simplify right side
    86,243.83x = 5,102,607,915.70
  5. Step 5: Solve for x
    x = 5,102,607,915.70/86,243.83
  6. Step 6: Final answer
    x = 59,164.90

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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.