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Finding the Fourth Proportional to 91,199.39, 125,849.90 and 50,915.70

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Solution

The fourth proportional to 91,199.39, 125,849.90 and 50,915.70 is: 70,260.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,199.39 : 125,849.90 = 50,915.70 : x
  2. Step 2: Convert to fraction form
    91,199.39/125,849.90 = 50,915.70/x
  3. Step 3: Cross multiply
    91,199.39x = 125,849.90 × 50,915.70
  4. Step 4: Simplify right side
    91,199.39x = 6,407,735,880.72
  5. Step 5: Solve for x
    x = 6,407,735,880.72/91,199.39
  6. Step 6: Final answer
    x = 70,260.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.