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Finding the Fourth Proportional to 65,759.18, 98,644.18 and 21,384.96

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Solution

The fourth proportional to 65,759.18, 98,644.18 and 21,384.96 is: 32,079.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,759.18 : 98,644.18 = 21,384.96 : x
  2. Step 2: Convert to fraction form
    65,759.18/98,644.18 = 21,384.96/x
  3. Step 3: Cross multiply
    65,759.18x = 98,644.18 × 21,384.96
  4. Step 4: Simplify right side
    65,759.18x = 2,109,501,843.53
  5. Step 5: Solve for x
    x = 2,109,501,843.53/65,759.18
  6. Step 6: Final answer
    x = 32,079.20

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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.