Home / 66,439.13-91,686.72-36,224.21

Finding the Fourth Proportional to 66,439.13, 91,686.72 and 36,224.21

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Solution

The fourth proportional to 66,439.13, 91,686.72 and 36,224.21 is: 49,989.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,439.13 : 91,686.72 = 36,224.21 : x
  2. Step 2: Convert to fraction form
    66,439.13/91,686.72 = 36,224.21/x
  3. Step 3: Cross multiply
    66,439.13x = 91,686.72 × 36,224.21
  4. Step 4: Simplify right side
    66,439.13x = 3,321,278,359.94
  5. Step 5: Solve for x
    x = 3,321,278,359.94/66,439.13
  6. Step 6: Final answer
    x = 49,989.79

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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.