Home / 66,391.36-91,624.60-40,560.96

Finding the Fourth Proportional to 66,391.36, 91,624.60 and 40,560.96

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Solution

The fourth proportional to 66,391.36, 91,624.60 and 40,560.96 is: 55,976.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,391.36 : 91,624.60 = 40,560.96 : x
  2. Step 2: Convert to fraction form
    66,391.36/91,624.60 = 40,560.96/x
  3. Step 3: Cross multiply
    66,391.36x = 91,624.60 × 40,560.96
  4. Step 4: Simplify right side
    66,391.36x = 3,716,381,735.62
  5. Step 5: Solve for x
    x = 3,716,381,735.62/66,391.36
  6. Step 6: Final answer
    x = 55,976.89

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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.