Home / 74,371.12-102,632.20-40,379.56

Finding the Fourth Proportional to 74,371.12, 102,632.20 and 40,379.56

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Solution

The fourth proportional to 74,371.12, 102,632.20 and 40,379.56 is: 55,723.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,371.12 : 102,632.20 = 40,379.56 : x
  2. Step 2: Convert to fraction form
    74,371.12/102,632.20 = 40,379.56/x
  3. Step 3: Cross multiply
    74,371.12x = 102,632.20 × 40,379.56
  4. Step 4: Simplify right side
    74,371.12x = 4,144,243,077.83
  5. Step 5: Solve for x
    x = 4,144,243,077.83/74,371.12
  6. Step 6: Final answer
    x = 55,723.82

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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.