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Finding the Fourth Proportional to 90,650.96, 125,099.40 and 54,844.88

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Solution

The fourth proportional to 90,650.96, 125,099.40 and 54,844.88 is: 75,686.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,650.96 : 125,099.40 = 54,844.88 : x
  2. Step 2: Convert to fraction form
    90,650.96/125,099.40 = 54,844.88/x
  3. Step 3: Cross multiply
    90,650.96x = 125,099.40 × 54,844.88
  4. Step 4: Simplify right side
    90,650.96x = 6,861,061,581.07
  5. Step 5: Solve for x
    x = 6,861,061,581.07/90,650.96
  6. Step 6: Final answer
    x = 75,686.58

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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.