Home / 66,182.19-91,290.29-39,305.31

Finding the Fourth Proportional to 66,182.19, 91,290.29 and 39,305.31

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Solution

The fourth proportional to 66,182.19, 91,290.29 and 39,305.31 is: 54,216.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,182.19 : 91,290.29 = 39,305.31 : x
  2. Step 2: Convert to fraction form
    66,182.19/91,290.29 = 39,305.31/x
  3. Step 3: Cross multiply
    66,182.19x = 91,290.29 × 39,305.31
  4. Step 4: Simplify right side
    66,182.19x = 3,588,192,951.91
  5. Step 5: Solve for x
    x = 3,588,192,951.91/66,182.19
  6. Step 6: Final answer
    x = 54,216.90

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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.