Home / 115,267.89-172,979.47-40,388.65

Finding the Fourth Proportional to 115,267.89, 172,979.47 and 40,388.65

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Solution

The fourth proportional to 115,267.89, 172,979.47 and 40,388.65 is: 60,610.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,267.89 : 172,979.47 = 40,388.65 : x
  2. Step 2: Convert to fraction form
    115,267.89/172,979.47 = 40,388.65/x
  3. Step 3: Cross multiply
    115,267.89x = 172,979.47 × 40,388.65
  4. Step 4: Simplify right side
    115,267.89x = 6,986,407,489.15
  5. Step 5: Solve for x
    x = 6,986,407,489.15/115,267.89
  6. Step 6: Final answer
    x = 60,610.18

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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.