Home / 74,504.07-102,816.90-40,512.78

Finding the Fourth Proportional to 74,504.07, 102,816.90 and 40,512.78

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Solution

The fourth proportional to 74,504.07, 102,816.90 and 40,512.78 is: 55,908.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,504.07 : 102,816.90 = 40,512.78 : x
  2. Step 2: Convert to fraction form
    74,504.07/102,816.90 = 40,512.78/x
  3. Step 3: Cross multiply
    74,504.07x = 102,816.90 × 40,512.78
  4. Step 4: Simplify right side
    74,504.07x = 4,165,398,449.98
  5. Step 5: Solve for x
    x = 4,165,398,449.98/74,504.07
  6. Step 6: Final answer
    x = 55,908.33

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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.