Home / 74,306.77-111,269.84-40,989.78

Finding the Fourth Proportional to 74,306.77, 111,269.84 and 40,989.78

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Solution

The fourth proportional to 74,306.77, 111,269.84 and 40,989.78 is: 61,379.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,306.77 : 111,269.84 = 40,989.78 : x
  2. Step 2: Convert to fraction form
    74,306.77/111,269.84 = 40,989.78/x
  3. Step 3: Cross multiply
    74,306.77x = 111,269.84 × 40,989.78
  4. Step 4: Simplify right side
    74,306.77x = 4,560,926,057.29
  5. Step 5: Solve for x
    x = 4,560,926,057.29/74,306.77
  6. Step 6: Final answer
    x = 61,379.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.