Home / 115,219.78-172,829.40-45,049.75

Finding the Fourth Proportional to 115,219.78, 172,829.40 and 45,049.75

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Solution

The fourth proportional to 115,219.78, 172,829.40 and 45,049.75 is: 67,574.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,219.78 : 172,829.40 = 45,049.75 : x
  2. Step 2: Convert to fraction form
    115,219.78/172,829.40 = 45,049.75/x
  3. Step 3: Cross multiply
    115,219.78x = 172,829.40 × 45,049.75
  4. Step 4: Simplify right side
    115,219.78x = 7,785,921,262.65
  5. Step 5: Solve for x
    x = 7,785,921,262.65/115,219.78
  6. Step 6: Final answer
    x = 67,574.52

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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.