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Finding the Fourth Proportional to 88,275.88, 121,819.26 and 47,990.64

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Solution

The fourth proportional to 88,275.88, 121,819.26 and 47,990.64 is: 66,226.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,275.88 : 121,819.26 = 47,990.64 : x
  2. Step 2: Convert to fraction form
    88,275.88/121,819.26 = 47,990.64/x
  3. Step 3: Cross multiply
    88,275.88x = 121,819.26 × 47,990.64
  4. Step 4: Simplify right side
    88,275.88x = 5,846,184,251.73
  5. Step 5: Solve for x
    x = 5,846,184,251.73/88,275.88
  6. Step 6: Final answer
    x = 66,226.29

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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.