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Finding the Fourth Proportional to 87,000.41, 120,118.41 and 66,821.22

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Solution

The fourth proportional to 87,000.41, 120,118.41 and 66,821.22 is: 92,257.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,000.41 : 120,118.41 = 66,821.22 : x
  2. Step 2: Convert to fraction form
    87,000.41/120,118.41 = 66,821.22/x
  3. Step 3: Cross multiply
    87,000.41x = 120,118.41 × 66,821.22
  4. Step 4: Simplify right side
    87,000.41x = 8,026,458,700.66
  5. Step 5: Solve for x
    x = 8,026,458,700.66/87,000.41
  6. Step 6: Final answer
    x = 92,257.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.