Home / 66,077.71-91,145.76-39,201.19

Finding the Fourth Proportional to 66,077.71, 91,145.76 and 39,201.19

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Solution

The fourth proportional to 66,077.71, 91,145.76 and 39,201.19 is: 54,073.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,077.71 : 91,145.76 = 39,201.19 : x
  2. Step 2: Convert to fraction form
    66,077.71/91,145.76 = 39,201.19/x
  3. Step 3: Cross multiply
    66,077.71x = 91,145.76 × 39,201.19
  4. Step 4: Simplify right side
    66,077.71x = 3,573,022,101.09
  5. Step 5: Solve for x
    x = 3,573,022,101.09/66,077.71
  6. Step 6: Final answer
    x = 54,073.03

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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.