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Finding the Fourth Proportional to 72,992.97, 100,730.03 and 39,458.97

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Solution

The fourth proportional to 72,992.97, 100,730.03 and 39,458.97 is: 54,453.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,992.97 : 100,730.03 = 39,458.97 : x
  2. Step 2: Convert to fraction form
    72,992.97/100,730.03 = 39,458.97/x
  3. Step 3: Cross multiply
    72,992.97x = 100,730.03 × 39,458.97
  4. Step 4: Simplify right side
    72,992.97x = 3,974,703,034.57
  5. Step 5: Solve for x
    x = 3,974,703,034.57/72,992.97
  6. Step 6: Final answer
    x = 54,453.23

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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.