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Finding the Fourth Proportional to 91,149.84, 125,790.80 and 50,863.76

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Solution

The fourth proportional to 91,149.84, 125,790.80 and 50,863.76 is: 70,194.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,149.84 : 125,790.80 = 50,863.76 : x
  2. Step 2: Convert to fraction form
    91,149.84/125,790.80 = 50,863.76/x
  3. Step 3: Cross multiply
    91,149.84x = 125,790.80 × 50,863.76
  4. Step 4: Simplify right side
    91,149.84x = 6,398,193,061.41
  5. Step 5: Solve for x
    x = 6,398,193,061.41/91,149.84
  6. Step 6: Final answer
    x = 70,194.23

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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.