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Finding the Fourth Proportional to 65,959.53, 98,948.61 and 21,589.89

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Solution

The fourth proportional to 65,959.53, 98,948.61 and 21,589.89 is: 32,387.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,959.53 : 98,948.61 = 21,589.89 : x
  2. Step 2: Convert to fraction form
    65,959.53/98,948.61 = 21,589.89/x
  3. Step 3: Cross multiply
    65,959.53x = 98,948.61 × 21,589.89
  4. Step 4: Simplify right side
    65,959.53x = 2,136,289,605.55
  5. Step 5: Solve for x
    x = 2,136,289,605.55/65,959.53
  6. Step 6: Final answer
    x = 32,387.88

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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.