Home / 66,171.06-91,279.10-40,659.71

Finding the Fourth Proportional to 66,171.06, 91,279.10 and 40,659.71

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Solution

The fourth proportional to 66,171.06, 91,279.10 and 40,659.71 is: 56,087.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,171.06 : 91,279.10 = 40,659.71 : x
  2. Step 2: Convert to fraction form
    66,171.06/91,279.10 = 40,659.71/x
  3. Step 3: Cross multiply
    66,171.06x = 91,279.10 × 40,659.71
  4. Step 4: Simplify right side
    66,171.06x = 3,711,381,380.31
  5. Step 5: Solve for x
    x = 3,711,381,380.31/66,171.06
  6. Step 6: Final answer
    x = 56,087.68

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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.