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Finding the Fourth Proportional to 65,873.04, 98,799.28 and 21,489.95

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Solution

The fourth proportional to 65,873.04, 98,799.28 and 21,489.95 is: 32,231.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,873.04 : 98,799.28 = 21,489.95 : x
  2. Step 2: Convert to fraction form
    65,873.04/98,799.28 = 21,489.95/x
  3. Step 3: Cross multiply
    65,873.04x = 98,799.28 × 21,489.95
  4. Step 4: Simplify right side
    65,873.04x = 2,123,191,587.24
  5. Step 5: Solve for x
    x = 2,123,191,587.24/65,873.04
  6. Step 6: Final answer
    x = 32,231.57

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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.