Home / 65,958.12-91,023.89-40,478.56

Finding the Fourth Proportional to 65,958.12, 91,023.89 and 40,478.56

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Solution

The fourth proportional to 65,958.12, 91,023.89 and 40,478.56 is: 55,861.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,958.12 : 91,023.89 = 40,478.56 : x
  2. Step 2: Convert to fraction form
    65,958.12/91,023.89 = 40,478.56/x
  3. Step 3: Cross multiply
    65,958.12x = 91,023.89 × 40,478.56
  4. Step 4: Simplify right side
    65,958.12x = 3,684,515,562.85
  5. Step 5: Solve for x
    x = 3,684,515,562.85/65,958.12
  6. Step 6: Final answer
    x = 55,861.44

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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.