Home / 66,382.34-91,565.78-39,504.78

Finding the Fourth Proportional to 66,382.34, 91,565.78 and 39,504.78

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Solution

The fourth proportional to 66,382.34, 91,565.78 and 39,504.78 is: 54,491.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,382.34 : 91,565.78 = 39,504.78 : x
  2. Step 2: Convert to fraction form
    66,382.34/91,565.78 = 39,504.78/x
  3. Step 3: Cross multiply
    66,382.34x = 91,565.78 × 39,504.78
  4. Step 4: Simplify right side
    66,382.34x = 3,617,285,796.90
  5. Step 5: Solve for x
    x = 3,617,285,796.90/66,382.34
  6. Step 6: Final answer
    x = 54,491.69

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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.