Home / 89,721.39-123,813.90-49,438.89

Finding the Fourth Proportional to 89,721.39, 123,813.90 and 49,438.89

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Solution

The fourth proportional to 89,721.39, 123,813.90 and 49,438.89 is: 68,224.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,721.39 : 123,813.90 = 49,438.89 : x
  2. Step 2: Convert to fraction form
    89,721.39/123,813.90 = 49,438.89/x
  3. Step 3: Cross multiply
    89,721.39x = 123,813.90 × 49,438.89
  4. Step 4: Simplify right side
    89,721.39x = 6,121,221,782.57
  5. Step 5: Solve for x
    x = 6,121,221,782.57/89,721.39
  6. Step 6: Final answer
    x = 68,224.78

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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.