Home / 74,974.57-103,542.39-64,854.43

Finding the Fourth Proportional to 74,974.57, 103,542.39 and 64,854.43

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Solution

The fourth proportional to 74,974.57, 103,542.39 and 64,854.43 is: 89,566.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,974.57 : 103,542.39 = 64,854.43 : x
  2. Step 2: Convert to fraction form
    74,974.57/103,542.39 = 64,854.43/x
  3. Step 3: Cross multiply
    74,974.57x = 103,542.39 × 64,854.43
  4. Step 4: Simplify right side
    74,974.57x = 6,715,182,684.29
  5. Step 5: Solve for x
    x = 6,715,182,684.29/74,974.57
  6. Step 6: Final answer
    x = 89,566.14

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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.