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Finding the Fourth Proportional to 90,620.52, 125,064.05 and 50,340.84

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Solution

The fourth proportional to 90,620.52, 125,064.05 and 50,340.84 is: 69,474.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,620.52 : 125,064.05 = 50,340.84 : x
  2. Step 2: Convert to fraction form
    90,620.52/125,064.05 = 50,340.84/x
  3. Step 3: Cross multiply
    90,620.52x = 125,064.05 × 50,340.84
  4. Step 4: Simplify right side
    90,620.52x = 6,295,829,079.10
  5. Step 5: Solve for x
    x = 6,295,829,079.10/90,620.52
  6. Step 6: Final answer
    x = 69,474.65

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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.