Home / 66,654.42-91,984.20-39,799.28

Finding the Fourth Proportional to 66,654.42, 91,984.20 and 39,799.28

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Solution

The fourth proportional to 66,654.42, 91,984.20 and 39,799.28 is: 54,923.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,654.42 : 91,984.20 = 39,799.28 : x
  2. Step 2: Convert to fraction form
    66,654.42/91,984.20 = 39,799.28/x
  3. Step 3: Cross multiply
    66,654.42x = 91,984.20 × 39,799.28
  4. Step 4: Simplify right side
    66,654.42x = 3,660,904,471.46
  5. Step 5: Solve for x
    x = 3,660,904,471.46/66,654.42
  6. Step 6: Final answer
    x = 54,923.66

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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.