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Finding the Fourth Proportional to 65,472.75, 98,209.13 and 18,725.63

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Solution

The fourth proportional to 65,472.75, 98,209.13 and 18,725.63 is: 28,088.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,472.75 : 98,209.13 = 18,725.63 : x
  2. Step 2: Convert to fraction form
    65,472.75/98,209.13 = 18,725.63/x
  3. Step 3: Cross multiply
    65,472.75x = 98,209.13 × 18,725.63
  4. Step 4: Simplify right side
    65,472.75x = 1,839,027,246.33
  5. Step 5: Solve for x
    x = 1,839,027,246.33/65,472.75
  6. Step 6: Final answer
    x = 28,088.44

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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.