Home / 66,986.09-92,448.16-38,308.42

Finding the Fourth Proportional to 66,986.09, 92,448.16 and 38,308.42

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Solution

The fourth proportional to 66,986.09, 92,448.16 and 38,308.42 is: 52,869.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,986.09 : 92,448.16 = 38,308.42 : x
  2. Step 2: Convert to fraction form
    66,986.09/92,448.16 = 38,308.42/x
  3. Step 3: Cross multiply
    66,986.09x = 92,448.16 × 38,308.42
  4. Step 4: Simplify right side
    66,986.09x = 3,541,542,609.15
  5. Step 5: Solve for x
    x = 3,541,542,609.15/66,986.09
  6. Step 6: Final answer
    x = 52,869.82

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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.