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Finding the Fourth Proportional to 90,125.88, 124,362.78 and 49,834.14

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Solution

The fourth proportional to 90,125.88, 124,362.78 and 49,834.14 is: 68,765.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,125.88 : 124,362.78 = 49,834.14 : x
  2. Step 2: Convert to fraction form
    90,125.88/124,362.78 = 49,834.14/x
  3. Step 3: Cross multiply
    90,125.88x = 124,362.78 × 49,834.14
  4. Step 4: Simplify right side
    90,125.88x = 6,197,512,189.31
  5. Step 5: Solve for x
    x = 6,197,512,189.31/90,125.88
  6. Step 6: Final answer
    x = 68,765.07

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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.