Home / 71,772.38-99,034.68-39,941.18

Finding the Fourth Proportional to 71,772.38, 99,034.68 and 39,941.18

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Solution

The fourth proportional to 71,772.38, 99,034.68 and 39,941.18 is: 55,112.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,772.38 : 99,034.68 = 39,941.18 : x
  2. Step 2: Convert to fraction form
    71,772.38/99,034.68 = 39,941.18/x
  3. Step 3: Cross multiply
    71,772.38x = 99,034.68 × 39,941.18
  4. Step 4: Simplify right side
    71,772.38x = 3,955,561,980.12
  5. Step 5: Solve for x
    x = 3,955,561,980.12/71,772.38
  6. Step 6: Final answer
    x = 55,112.59

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Half scale
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Double scale
Find fourth proportional to 71,773.38, 99,036.06 and 39,942.18
Similar ratio
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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.