Home / 74,480.11-102,782.99-40,488.86

Finding the Fourth Proportional to 74,480.11, 102,782.99 and 40,488.86

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Solution

The fourth proportional to 74,480.11, 102,782.99 and 40,488.86 is: 55,874.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,480.11 : 102,782.99 = 40,488.86 : x
  2. Step 2: Convert to fraction form
    74,480.11/102,782.99 = 40,488.86/x
  3. Step 3: Cross multiply
    74,480.11x = 102,782.99 × 40,488.86
  4. Step 4: Simplify right side
    74,480.11x = 4,161,566,092.49
  5. Step 5: Solve for x
    x = 4,161,566,092.49/74,480.11
  6. Step 6: Final answer
    x = 55,874.87

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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.