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Finding the Fourth Proportional to 90,186.75, 124,447.46 and 49,894.92

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Solution

The fourth proportional to 90,186.75, 124,447.46 and 49,894.92 is: 68,849.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,186.75 : 124,447.46 = 49,894.92 : x
  2. Step 2: Convert to fraction form
    90,186.75/124,447.46 = 49,894.92/x
  3. Step 3: Cross multiply
    90,186.75x = 124,447.46 × 49,894.92
  4. Step 4: Simplify right side
    90,186.75x = 6,209,295,811.43
  5. Step 5: Solve for x
    x = 6,209,295,811.43/90,186.75
  6. Step 6: Final answer
    x = 68,849.31

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Double scale
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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.