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Finding the Fourth Proportional to 65,489.85, 98,214.12 and 28,040.04

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Solution

The fourth proportional to 65,489.85, 98,214.12 and 28,040.04 is: 42,051.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,489.85 : 98,214.12 = 28,040.04 : x
  2. Step 2: Convert to fraction form
    65,489.85/98,214.12 = 28,040.04/x
  3. Step 3: Cross multiply
    65,489.85x = 98,214.12 × 28,040.04
  4. Step 4: Simplify right side
    65,489.85x = 2,753,927,853.36
  5. Step 5: Solve for x
    x = 2,753,927,853.36/65,489.85
  6. Step 6: Final answer
    x = 42,051.22

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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.