Home / 86,342.43-129,601.99-71,301.65

Finding the Fourth Proportional to 86,342.43, 129,601.99 and 71,301.65

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Solution

The fourth proportional to 86,342.43, 129,601.99 and 71,301.65 is: 107,025.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,342.43 : 129,601.99 = 71,301.65 : x
  2. Step 2: Convert to fraction form
    86,342.43/129,601.99 = 71,301.65/x
  3. Step 3: Cross multiply
    86,342.43x = 129,601.99 × 71,301.65
  4. Step 4: Simplify right side
    86,342.43x = 9,240,835,171.40
  5. Step 5: Solve for x
    x = 9,240,835,171.40/86,342.43
  6. Step 6: Final answer
    x = 107,025.42

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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.