Home / 86,478.15-129,721.09-26,502.28

Finding the Fourth Proportional to 86,478.15, 129,721.09 and 26,502.28

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Solution

The fourth proportional to 86,478.15, 129,721.09 and 26,502.28 is: 39,754.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,478.15 : 129,721.09 = 26,502.28 : x
  2. Step 2: Convert to fraction form
    86,478.15/129,721.09 = 26,502.28/x
  3. Step 3: Cross multiply
    86,478.15x = 129,721.09 × 26,502.28
  4. Step 4: Simplify right side
    86,478.15x = 3,437,904,582.83
  5. Step 5: Solve for x
    x = 3,437,904,582.83/86,478.15
  6. Step 6: Final answer
    x = 39,754.61

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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.