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Finding the Fourth Proportional to 72,754.39, 100,400.07 and 40,923.31

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Solution

The fourth proportional to 72,754.39, 100,400.07 and 40,923.31 is: 56,473.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,754.39 : 100,400.07 = 40,923.31 : x
  2. Step 2: Convert to fraction form
    72,754.39/100,400.07 = 40,923.31/x
  3. Step 3: Cross multiply
    72,754.39x = 100,400.07 × 40,923.31
  4. Step 4: Simplify right side
    72,754.39x = 4,108,703,188.63
  5. Step 5: Solve for x
    x = 4,108,703,188.63/72,754.39
  6. Step 6: Final answer
    x = 56,473.61

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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.