Home / 81,281.62-112,161.03-50,651.87

Finding the Fourth Proportional to 81,281.62, 112,161.03 and 50,651.87

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Solution

The fourth proportional to 81,281.62, 112,161.03 and 50,651.87 is: 69,894.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,281.62 : 112,161.03 = 50,651.87 : x
  2. Step 2: Convert to fraction form
    81,281.62/112,161.03 = 50,651.87/x
  3. Step 3: Cross multiply
    81,281.62x = 112,161.03 × 50,651.87
  4. Step 4: Simplify right side
    81,281.62x = 5,681,165,937.77
  5. Step 5: Solve for x
    x = 5,681,165,937.77/81,281.62
  6. Step 6: Final answer
    x = 69,894.84

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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.