Home / 66,017.96-91,102.31-39,144.38

Finding the Fourth Proportional to 66,017.96, 91,102.31 and 39,144.38

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Solution

The fourth proportional to 66,017.96, 91,102.31 and 39,144.38 is: 54,017.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,017.96 : 91,102.31 = 39,144.38 : x
  2. Step 2: Convert to fraction form
    66,017.96/91,102.31 = 39,144.38/x
  3. Step 3: Cross multiply
    66,017.96x = 91,102.31 × 39,144.38
  4. Step 4: Simplify right side
    66,017.96x = 3,566,143,767.13
  5. Step 5: Solve for x
    x = 3,566,143,767.13/66,017.96
  6. Step 6: Final answer
    x = 54,017.79

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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.