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Finding the Fourth Proportional to 91,727.40, 137,591.10 and 54,863.40

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Solution

The fourth proportional to 91,727.40, 137,591.10 and 54,863.40 is: 82,295.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,727.40 : 137,591.10 = 54,863.40 : x
  2. Step 2: Convert to fraction form
    91,727.40/137,591.10 = 54,863.40/x
  3. Step 3: Cross multiply
    91,727.40x = 137,591.10 × 54,863.40
  4. Step 4: Simplify right side
    91,727.40x = 7,548,715,555.74
  5. Step 5: Solve for x
    x = 7,548,715,555.74/91,727.40
  6. Step 6: Final answer
    x = 82,295.10

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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.