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Finding the Fourth Proportional to 72,497.70, 100,067.40 and 43,812.54

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Solution

The fourth proportional to 72,497.70, 100,067.40 and 43,812.54 is: 60,473.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,497.70 : 100,067.40 = 43,812.54 : x
  2. Step 2: Convert to fraction form
    72,497.70/100,067.40 = 43,812.54/x
  3. Step 3: Cross multiply
    72,497.70x = 100,067.40 × 43,812.54
  4. Step 4: Simplify right side
    72,497.70x = 4,384,206,965.20
  5. Step 5: Solve for x
    x = 4,384,206,965.20/72,497.70
  6. Step 6: Final answer
    x = 60,473.74

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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.