Home / 65,845.80-98,720.10-28,375.20

Finding the Fourth Proportional to 65,845.80, 98,720.10 and 28,375.20

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Solution

The fourth proportional to 65,845.80, 98,720.10 and 28,375.20 is: 42,541.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,845.80 : 98,720.10 = 28,375.20 : x
  2. Step 2: Convert to fraction form
    65,845.80/98,720.10 = 28,375.20/x
  3. Step 3: Cross multiply
    65,845.80x = 98,720.10 × 28,375.20
  4. Step 4: Simplify right side
    65,845.80x = 2,801,202,581.52
  5. Step 5: Solve for x
    x = 2,801,202,581.52/65,845.80
  6. Step 6: Final answer
    x = 42,541.86

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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.