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Finding the Fourth Proportional to 65,899.76, 98,854.28 and 21,523.28

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Solution

The fourth proportional to 65,899.76, 98,854.28 and 21,523.28 is: 32,286.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,899.76 : 98,854.28 = 21,523.28 : x
  2. Step 2: Convert to fraction form
    65,899.76/98,854.28 = 21,523.28/x
  3. Step 3: Cross multiply
    65,899.76x = 98,854.28 × 21,523.28
  4. Step 4: Simplify right side
    65,899.76x = 2,127,668,347.64
  5. Step 5: Solve for x
    x = 2,127,668,347.64/65,899.76
  6. Step 6: Final answer
    x = 32,286.44

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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.