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Finding the Fourth Proportional to 87,740.41, 121,081.41 and 47,454.22

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Solution

The fourth proportional to 87,740.41, 121,081.41 and 47,454.22 is: 65,486.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,740.41 : 121,081.41 = 47,454.22 : x
  2. Step 2: Convert to fraction form
    87,740.41/121,081.41 = 47,454.22/x
  3. Step 3: Cross multiply
    87,740.41x = 121,081.41 × 47,454.22
  4. Step 4: Simplify right side
    87,740.41x = 5,745,823,868.05
  5. Step 5: Solve for x
    x = 5,745,823,868.05/87,740.41
  6. Step 6: Final answer
    x = 65,486.63

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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.