Home / 74,340.30-102,588.78-40,348.86

Finding the Fourth Proportional to 74,340.30, 102,588.78 and 40,348.86

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Solution

The fourth proportional to 74,340.30, 102,588.78 and 40,348.86 is: 55,680.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,340.30 : 102,588.78 = 40,348.86 : x
  2. Step 2: Convert to fraction form
    74,340.30/102,588.78 = 40,348.86/x
  3. Step 3: Cross multiply
    74,340.30x = 102,588.78 × 40,348.86
  4. Step 4: Simplify right side
    74,340.30x = 4,139,340,321.79
  5. Step 5: Solve for x
    x = 4,139,340,321.79/74,340.30
  6. Step 6: Final answer
    x = 55,680.97

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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.