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Finding the Fourth Proportional to 65,881.62, 98,827.88 and 21,507.39

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Solution

The fourth proportional to 65,881.62, 98,827.88 and 21,507.39 is: 32,262.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,881.62 : 98,827.88 = 21,507.39 : x
  2. Step 2: Convert to fraction form
    65,881.62/98,827.88 = 21,507.39/x
  3. Step 3: Cross multiply
    65,881.62x = 98,827.88 × 21,507.39
  4. Step 4: Simplify right side
    65,881.62x = 2,125,529,650.50
  5. Step 5: Solve for x
    x = 2,125,529,650.50/65,881.62
  6. Step 6: Final answer
    x = 32,262.86

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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.