Home / 74,159.43-102,340.17-40,167.78

Finding the Fourth Proportional to 74,159.43, 102,340.17 and 40,167.78

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Solution

The fourth proportional to 74,159.43, 102,340.17 and 40,167.78 is: 55,431.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,159.43 : 102,340.17 = 40,167.78 : x
  2. Step 2: Convert to fraction form
    74,159.43/102,340.17 = 40,167.78/x
  3. Step 3: Cross multiply
    74,159.43x = 102,340.17 × 40,167.78
  4. Step 4: Simplify right side
    74,159.43x = 4,110,777,433.72
  5. Step 5: Solve for x
    x = 4,110,777,433.72/74,159.43
  6. Step 6: Final answer
    x = 55,431.62

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1.5x scale

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.