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Finding the Fourth Proportional to 65,690.96, 98,541.87 and 28,251.92

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Solution

The fourth proportional to 65,690.96, 98,541.87 and 28,251.92 is: 42,380.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,690.96 : 98,541.87 = 28,251.92 : x
  2. Step 2: Convert to fraction form
    65,690.96/98,541.87 = 28,251.92/x
  3. Step 3: Cross multiply
    65,690.96x = 98,541.87 × 28,251.92
  4. Step 4: Simplify right side
    65,690.96x = 2,783,997,027.89
  5. Step 5: Solve for x
    x = 2,783,997,027.89/65,690.96
  6. Step 6: Final answer
    x = 42,380.22

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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.