Home / 71,245.22-98,315.45-38,979.68

Finding the Fourth Proportional to 71,245.22, 98,315.45 and 38,979.68

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Solution

The fourth proportional to 71,245.22, 98,315.45 and 38,979.68 is: 53,790.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,245.22 : 98,315.45 = 38,979.68 : x
  2. Step 2: Convert to fraction form
    71,245.22/98,315.45 = 38,979.68/x
  3. Step 3: Cross multiply
    71,245.22x = 98,315.45 × 38,979.68
  4. Step 4: Simplify right side
    71,245.22x = 3,832,304,780.06
  5. Step 5: Solve for x
    x = 3,832,304,780.06/71,245.22
  6. Step 6: Final answer
    x = 53,790.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.