Home / 87,879.40-131,726.04-28,699.18

Finding the Fourth Proportional to 87,879.40, 131,726.04 and 28,699.18

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Solution

The fourth proportional to 87,879.40, 131,726.04 and 28,699.18 is: 43,018.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,879.40 : 131,726.04 = 28,699.18 : x
  2. Step 2: Convert to fraction form
    87,879.40/131,726.04 = 28,699.18/x
  3. Step 3: Cross multiply
    87,879.40x = 131,726.04 × 28,699.18
  4. Step 4: Simplify right side
    87,879.40x = 3,780,429,332.65
  5. Step 5: Solve for x
    x = 3,780,429,332.65/87,879.40
  6. Step 6: Final answer
    x = 43,018.38

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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.