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Finding the Fourth Proportional to 65,489.87, 98,152.61 and 28,005.85

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Solution

The fourth proportional to 65,489.87, 98,152.61 and 28,005.85 is: 41,973.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,489.87 : 98,152.61 = 28,005.85 : x
  2. Step 2: Convert to fraction form
    65,489.87/98,152.61 = 28,005.85/x
  3. Step 3: Cross multiply
    65,489.87x = 98,152.61 × 28,005.85
  4. Step 4: Simplify right side
    65,489.87x = 2,748,847,255.43
  5. Step 5: Solve for x
    x = 2,748,847,255.43/65,489.87
  6. Step 6: Final answer
    x = 41,973.62

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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.