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Finding the Fourth Proportional to 65,969.92, 98,976.76 and 43,870.28

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Solution

The fourth proportional to 65,969.92, 98,976.76 and 43,870.28 is: 65,819.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,969.92 : 98,976.76 = 43,870.28 : x
  2. Step 2: Convert to fraction form
    65,969.92/98,976.76 = 43,870.28/x
  3. Step 3: Cross multiply
    65,969.92x = 98,976.76 × 43,870.28
  4. Step 4: Simplify right side
    65,969.92x = 4,342,138,174.69
  5. Step 5: Solve for x
    x = 4,342,138,174.69/65,969.92
  6. Step 6: Final answer
    x = 65,819.97

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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.