Home / 66,191.72-91,357.86-39,329.06

Finding the Fourth Proportional to 66,191.72, 91,357.86 and 39,329.06

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Solution

The fourth proportional to 66,191.72, 91,357.86 and 39,329.06 is: 54,282.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,191.72 : 91,357.86 = 39,329.06 : x
  2. Step 2: Convert to fraction form
    66,191.72/91,357.86 = 39,329.06/x
  3. Step 3: Cross multiply
    66,191.72x = 91,357.86 × 39,329.06
  4. Step 4: Simplify right side
    66,191.72x = 3,593,018,757.41
  5. Step 5: Solve for x
    x = 3,593,018,757.41/66,191.72
  6. Step 6: Final answer
    x = 54,282.00

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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.