Home / 66,171.28-91,306.08-39,313.10

Finding the Fourth Proportional to 66,171.28, 91,306.08 and 39,313.10

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Solution

The fourth proportional to 66,171.28, 91,306.08 and 39,313.10 is: 54,245.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,171.28 : 91,306.08 = 39,313.10 : x
  2. Step 2: Convert to fraction form
    66,171.28/91,306.08 = 39,313.10/x
  3. Step 3: Cross multiply
    66,171.28x = 91,306.08 × 39,313.10
  4. Step 4: Simplify right side
    66,171.28x = 3,589,525,053.65
  5. Step 5: Solve for x
    x = 3,589,525,053.65/66,171.28
  6. Step 6: Final answer
    x = 54,245.97

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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.