Home / 115,279.28-172,899.33-31,020.65

Finding the Fourth Proportional to 115,279.28, 172,899.33 and 31,020.65

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Solution

The fourth proportional to 115,279.28, 172,899.33 and 31,020.65 is: 46,525.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,279.28 : 172,899.33 = 31,020.65 : x
  2. Step 2: Convert to fraction form
    115,279.28/172,899.33 = 31,020.65/x
  3. Step 3: Cross multiply
    115,279.28x = 172,899.33 × 31,020.65
  4. Step 4: Simplify right side
    115,279.28x = 5,363,449,044.17
  5. Step 5: Solve for x
    x = 5,363,449,044.17/115,279.28
  6. Step 6: Final answer
    x = 46,525.70

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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.