Home / 74,134.43-102,306.36-40,143.69

Finding the Fourth Proportional to 74,134.43, 102,306.36 and 40,143.69

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Solution

The fourth proportional to 74,134.43, 102,306.36 and 40,143.69 is: 55,398.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,134.43 : 102,306.36 = 40,143.69 : x
  2. Step 2: Convert to fraction form
    74,134.43/102,306.36 = 40,143.69/x
  3. Step 3: Cross multiply
    74,134.43x = 102,306.36 × 40,143.69
  4. Step 4: Simplify right side
    74,134.43x = 4,106,955,029.11
  5. Step 5: Solve for x
    x = 4,106,955,029.11/74,134.43
  6. Step 6: Final answer
    x = 55,398.75

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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.