Home / 74,158.43-102,338.79-40,166.78

Finding the Fourth Proportional to 74,158.43, 102,338.79 and 40,166.78

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Solution

The fourth proportional to 74,158.43, 102,338.79 and 40,166.78 is: 55,430.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,158.43 : 102,338.79 = 40,166.78 : x
  2. Step 2: Convert to fraction form
    74,158.43/102,338.79 = 40,166.78/x
  3. Step 3: Cross multiply
    74,158.43x = 102,338.79 × 40,166.78
  4. Step 4: Simplify right side
    74,158.43x = 4,110,619,151.70
  5. Step 5: Solve for x
    x = 4,110,619,151.70/74,158.43
  6. Step 6: Final answer
    x = 55,430.24

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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.