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Finding the Fourth Proportional to 88,422.87, 121,753.33 and 66,650.78

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Solution

The fourth proportional to 88,422.87, 121,753.33 and 66,650.78 is: 91,774.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,422.87 : 121,753.33 = 66,650.78 : x
  2. Step 2: Convert to fraction form
    88,422.87/121,753.33 = 66,650.78/x
  3. Step 3: Cross multiply
    88,422.87x = 121,753.33 × 66,650.78
  4. Step 4: Simplify right side
    88,422.87x = 8,114,954,549.85
  5. Step 5: Solve for x
    x = 8,114,954,549.85/88,422.87
  6. Step 6: Final answer
    x = 91,774.38

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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.