Home / 65,443.20-98,139.96-27,979.80

Finding the Fourth Proportional to 65,443.20, 98,139.96 and 27,979.80

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Solution

The fourth proportional to 65,443.20, 98,139.96 and 27,979.80 is: 41,959.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,443.20 : 98,139.96 = 27,979.80 : x
  2. Step 2: Convert to fraction form
    65,443.20/98,139.96 = 27,979.80/x
  3. Step 3: Cross multiply
    65,443.20x = 98,139.96 × 27,979.80
  4. Step 4: Simplify right side
    65,443.20x = 2,745,936,452.81
  5. Step 5: Solve for x
    x = 2,745,936,452.81/65,443.20
  6. Step 6: Final answer
    x = 41,959.08

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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.