Home / 91,896.40-137,844.60-39,311.20

Finding the Fourth Proportional to 91,896.40, 137,844.60 and 39,311.20

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Solution

The fourth proportional to 91,896.40, 137,844.60 and 39,311.20 is: 58,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,896.40 : 137,844.60 = 39,311.20 : x
  2. Step 2: Convert to fraction form
    91,896.40/137,844.60 = 39,311.20/x
  3. Step 3: Cross multiply
    91,896.40x = 137,844.60 × 39,311.20
  4. Step 4: Simplify right side
    91,896.40x = 5,418,836,639.52
  5. Step 5: Solve for x
    x = 5,418,836,639.52/91,896.40
  6. Step 6: Final answer
    x = 58,966.80

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.