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Finding the Fourth Proportional to 84,978.11, 117,264.97 and 47,251.55

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Solution

The fourth proportional to 84,978.11, 117,264.97 and 47,251.55 is: 65,204.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,978.11 : 117,264.97 = 47,251.55 : x
  2. Step 2: Convert to fraction form
    84,978.11/117,264.97 = 47,251.55/x
  3. Step 3: Cross multiply
    84,978.11x = 117,264.97 × 47,251.55
  4. Step 4: Simplify right side
    84,978.11x = 5,540,951,593.20
  5. Step 5: Solve for x
    x = 5,540,951,593.20/84,978.11
  6. Step 6: Final answer
    x = 65,204.46

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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.