Home / 66,207.68-91,396.05-39,358.88

Finding the Fourth Proportional to 66,207.68, 91,396.05 and 39,358.88

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Solution

The fourth proportional to 66,207.68, 91,396.05 and 39,358.88 is: 54,332.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,207.68 : 91,396.05 = 39,358.88 : x
  2. Step 2: Convert to fraction form
    66,207.68/91,396.05 = 39,358.88/x
  3. Step 3: Cross multiply
    66,207.68x = 91,396.05 × 39,358.88
  4. Step 4: Simplify right side
    66,207.68x = 3,597,246,164.42
  5. Step 5: Solve for x
    x = 3,597,246,164.42/66,207.68
  6. Step 6: Final answer
    x = 54,332.76

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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.