Home / 91,961.40-137,942.10-39,376.20

Finding the Fourth Proportional to 91,961.40, 137,942.10 and 39,376.20

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Solution

The fourth proportional to 91,961.40, 137,942.10 and 39,376.20 is: 59,064.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,961.40 : 137,942.10 = 39,376.20 : x
  2. Step 2: Convert to fraction form
    91,961.40/137,942.10 = 39,376.20/x
  3. Step 3: Cross multiply
    91,961.40x = 137,942.10 × 39,376.20
  4. Step 4: Simplify right side
    91,961.40x = 5,431,635,718.02
  5. Step 5: Solve for x
    x = 5,431,635,718.02/91,961.40
  6. Step 6: Final answer
    x = 59,064.30

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Similar ratio
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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.