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Finding the Fourth Proportional to 65,979.20, 98,990.52 and 43,879.52

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Solution

The fourth proportional to 65,979.20, 98,990.52 and 43,879.52 is: 65,833.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,979.20 : 98,990.52 = 43,879.52 : x
  2. Step 2: Convert to fraction form
    65,979.20/98,990.52 = 43,879.52/x
  3. Step 3: Cross multiply
    65,979.20x = 98,990.52 × 43,879.52
  4. Step 4: Simplify right side
    65,979.20x = 4,343,656,502.15
  5. Step 5: Solve for x
    x = 4,343,656,502.15/65,979.20
  6. Step 6: Final answer
    x = 65,833.72

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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.