Home / 55,780.10-76,977.11-30,286.70

Finding the Fourth Proportional to 55,780.10, 76,977.11 and 30,286.70

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Solution

The fourth proportional to 55,780.10, 76,977.11 and 30,286.70 is: 41,795.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,780.10 : 76,977.11 = 30,286.70 : x
  2. Step 2: Convert to fraction form
    55,780.10/76,977.11 = 30,286.70/x
  3. Step 3: Cross multiply
    55,780.10x = 76,977.11 × 30,286.70
  4. Step 4: Simplify right side
    55,780.10x = 2,331,382,101.12
  5. Step 5: Solve for x
    x = 2,331,382,101.12/55,780.10
  6. Step 6: Final answer
    x = 41,795.95

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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.