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Finding the Fourth Proportional to 60,197.97, 90,213.91 and 45,390.61

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Solution

The fourth proportional to 60,197.97, 90,213.91 and 45,390.61 is: 68,023.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,197.97 : 90,213.91 = 45,390.61 : x
  2. Step 2: Convert to fraction form
    60,197.97/90,213.91 = 45,390.61/x
  3. Step 3: Cross multiply
    60,197.97x = 90,213.91 × 45,390.61
  4. Step 4: Simplify right side
    60,197.97x = 4,094,864,405.39
  5. Step 5: Solve for x
    x = 4,094,864,405.39/60,197.97
  6. Step 6: Final answer
    x = 68,023.30

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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.