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Finding the Fourth Proportional to 65,489.30, 98,151.35 and 28,005.06

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Solution

The fourth proportional to 65,489.30, 98,151.35 and 28,005.06 is: 41,972.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,489.30 : 98,151.35 = 28,005.06 : x
  2. Step 2: Convert to fraction form
    65,489.30/98,151.35 = 28,005.06/x
  3. Step 3: Cross multiply
    65,489.30x = 98,151.35 × 28,005.06
  4. Step 4: Simplify right side
    65,489.30x = 2,748,734,445.83
  5. Step 5: Solve for x
    x = 2,748,734,445.83/65,489.30
  6. Step 6: Final answer
    x = 41,972.27

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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.