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Finding the Fourth Proportional to 65,903.64, 98,842.50 and 21,531.96

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Solution

The fourth proportional to 65,903.64, 98,842.50 and 21,531.96 is: 32,293.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,903.64 : 98,842.50 = 21,531.96 : x
  2. Step 2: Convert to fraction form
    65,903.64/98,842.50 = 21,531.96/x
  3. Step 3: Cross multiply
    65,903.64x = 98,842.50 × 21,531.96
  4. Step 4: Simplify right side
    65,903.64x = 2,128,272,756.30
  5. Step 5: Solve for x
    x = 2,128,272,756.30/65,903.64
  6. Step 6: Final answer
    x = 32,293.71

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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.