Home / 87,666.81-120,974.12-49,427.72

Finding the Fourth Proportional to 87,666.81, 120,974.12 and 49,427.72

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Solution

The fourth proportional to 87,666.81, 120,974.12 and 49,427.72 is: 68,206.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,666.81 : 120,974.12 = 49,427.72 : x
  2. Step 2: Convert to fraction form
    87,666.81/120,974.12 = 49,427.72/x
  3. Step 3: Cross multiply
    87,666.81x = 120,974.12 × 49,427.72
  4. Step 4: Simplify right side
    87,666.81x = 5,979,474,717.60
  5. Step 5: Solve for x
    x = 5,979,474,717.60/87,666.81
  6. Step 6: Final answer
    x = 68,206.83

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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.