Home / 66,090.33-91,229.49-39,246.12

Finding the Fourth Proportional to 66,090.33, 91,229.49 and 39,246.12

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Solution

The fourth proportional to 66,090.33, 91,229.49 and 39,246.12 is: 54,174.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,090.33 : 91,229.49 = 39,246.12 : x
  2. Step 2: Convert to fraction form
    66,090.33/91,229.49 = 39,246.12/x
  3. Step 3: Cross multiply
    66,090.33x = 91,229.49 × 39,246.12
  4. Step 4: Simplify right side
    66,090.33x = 3,580,403,512.08
  5. Step 5: Solve for x
    x = 3,580,403,512.08/66,090.33
  6. Step 6: Final answer
    x = 54,174.39

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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.