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Finding the Fourth Proportional to 90,654.87, 125,100.90 and 49,818.90

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Solution

The fourth proportional to 90,654.87, 125,100.90 and 49,818.90 is: 68,748.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,654.87 : 125,100.90 = 49,818.90 : x
  2. Step 2: Convert to fraction form
    90,654.87/125,100.90 = 49,818.90/x
  3. Step 3: Cross multiply
    90,654.87x = 125,100.90 × 49,818.90
  4. Step 4: Simplify right side
    90,654.87x = 6,232,389,227.01
  5. Step 5: Solve for x
    x = 6,232,389,227.01/90,654.87
  6. Step 6: Final answer
    x = 68,748.53

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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.