Home / 74,860.38-103,305.78-40,869.54

Finding the Fourth Proportional to 74,860.38, 103,305.78 and 40,869.54

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Solution

The fourth proportional to 74,860.38, 103,305.78 and 40,869.54 is: 56,399.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,860.38 : 103,305.78 = 40,869.54 : x
  2. Step 2: Convert to fraction form
    74,860.38/103,305.78 = 40,869.54/x
  3. Step 3: Cross multiply
    74,860.38x = 103,305.78 × 40,869.54
  4. Step 4: Simplify right side
    74,860.38x = 4,222,059,707.94
  5. Step 5: Solve for x
    x = 4,222,059,707.94/74,860.38
  6. Step 6: Final answer
    x = 56,399.12

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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.