Home / 80,890.80-111,631.68-45,083.76

Finding the Fourth Proportional to 80,890.80, 111,631.68 and 45,083.76

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Solution

The fourth proportional to 80,890.80, 111,631.68 and 45,083.76 is: 62,216.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,890.80 : 111,631.68 = 45,083.76 : x
  2. Step 2: Convert to fraction form
    80,890.80/111,631.68 = 45,083.76/x
  3. Step 3: Cross multiply
    80,890.80x = 111,631.68 × 45,083.76
  4. Step 4: Simplify right side
    80,890.80x = 5,032,775,869.52
  5. Step 5: Solve for x
    x = 5,032,775,869.52/80,890.80
  6. Step 6: Final answer
    x = 62,216.91

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1.5x scale

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.