Home / 80,972.61-111,742.37-45,161.70

Finding the Fourth Proportional to 80,972.61, 111,742.37 and 45,161.70

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Solution

The fourth proportional to 80,972.61, 111,742.37 and 45,161.70 is: 62,323.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,972.61 : 111,742.37 = 45,161.70 : x
  2. Step 2: Convert to fraction form
    80,972.61/111,742.37 = 45,161.70/x
  3. Step 3: Cross multiply
    80,972.61x = 111,742.37 × 45,161.70
  4. Step 4: Simplify right side
    80,972.61x = 5,046,475,391.23
  5. Step 5: Solve for x
    x = 5,046,475,391.23/80,972.61
  6. Step 6: Final answer
    x = 62,323.24

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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.