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Finding the Fourth Proportional to 91,092.60, 136,639.71 and 27,912.60

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Solution

The fourth proportional to 91,092.60, 136,639.71 and 27,912.60 is: 41,869.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,092.60 : 136,639.71 = 27,912.60 : x
  2. Step 2: Convert to fraction form
    91,092.60/136,639.71 = 27,912.60/x
  3. Step 3: Cross multiply
    91,092.60x = 136,639.71 × 27,912.60
  4. Step 4: Simplify right side
    91,092.60x = 3,813,969,569.35
  5. Step 5: Solve for x
    x = 3,813,969,569.35/91,092.60
  6. Step 6: Final answer
    x = 41,869.15

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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.