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Finding the Fourth Proportional to 91,805.40, 137,704.86 and 36,401.40

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Solution

The fourth proportional to 91,805.40, 137,704.86 and 36,401.40 is: 54,600.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,805.40 : 137,704.86 = 36,401.40 : x
  2. Step 2: Convert to fraction form
    91,805.40/137,704.86 = 36,401.40/x
  3. Step 3: Cross multiply
    91,805.40x = 137,704.86 × 36,401.40
  4. Step 4: Simplify right side
    91,805.40x = 5,012,649,690.80
  5. Step 5: Solve for x
    x = 5,012,649,690.80/91,805.40
  6. Step 6: Final answer
    x = 54,600.82

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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.