Home / 87,666.75-120,980.12-49,941

Finding the Fourth Proportional to 87,666.75, 120,980.12 and 49,941

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Solution

The fourth proportional to 87,666.75, 120,980.12 and 49,941 is: 68,918.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,666.75 : 120,980.12 = 49,941 : x
  2. Step 2: Convert to fraction form
    87,666.75/120,980.12 = 49,941/x
  3. Step 3: Cross multiply
    87,666.75x = 120,980.12 × 49,941
  4. Step 4: Simplify right side
    87,666.75x = 6,041,867,923.22
  5. Step 5: Solve for x
    x = 6,041,867,923.22/87,666.75
  6. Step 6: Final answer
    x = 68,918.58

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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.