Home / 72,448.08-108,711.36-30,331.88

Finding the Fourth Proportional to 72,448.08, 108,711.36 and 30,331.88

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Solution

The fourth proportional to 72,448.08, 108,711.36 and 30,331.88 is: 45,514.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,448.08 : 108,711.36 = 30,331.88 : x
  2. Step 2: Convert to fraction form
    72,448.08/108,711.36 = 30,331.88/x
  3. Step 3: Cross multiply
    72,448.08x = 108,711.36 × 30,331.88
  4. Step 4: Simplify right side
    72,448.08x = 3,297,419,926.16
  5. Step 5: Solve for x
    x = 3,297,419,926.16/72,448.08
  6. Step 6: Final answer
    x = 45,514.25

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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.