Home / 87,043.64-120,188.04-66,868.56

Finding the Fourth Proportional to 87,043.64, 120,188.04 and 66,868.56

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Solution

The fourth proportional to 87,043.64, 120,188.04 and 66,868.56 is: 92,330.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,043.64 : 120,188.04 = 66,868.56 : x
  2. Step 2: Convert to fraction form
    87,043.64/120,188.04 = 66,868.56/x
  3. Step 3: Cross multiply
    87,043.64x = 120,188.04 × 66,868.56
  4. Step 4: Simplify right side
    87,043.64x = 8,036,801,164.02
  5. Step 5: Solve for x
    x = 8,036,801,164.02/87,043.64
  6. Step 6: Final answer
    x = 92,330.71

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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.