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Finding the Fourth Proportional to 128,426.44, 192,610.43 and 48,472.88

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Solution

The fourth proportional to 128,426.44, 192,610.43 and 48,472.88 is: 72,698.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,426.44 : 192,610.43 = 48,472.88 : x
  2. Step 2: Convert to fraction form
    128,426.44/192,610.43 = 48,472.88/x
  3. Step 3: Cross multiply
    128,426.44x = 192,610.43 × 48,472.88
  4. Step 4: Simplify right side
    128,426.44x = 9,336,382,260.14
  5. Step 5: Solve for x
    x = 9,336,382,260.14/128,426.44
  6. Step 6: Final answer
    x = 72,698.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.