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Finding the Fourth Proportional to 89,775.06, 123,891.12 and 49,488.54

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Solution

The fourth proportional to 89,775.06, 123,891.12 and 49,488.54 is: 68,295.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,775.06 : 123,891.12 = 49,488.54 : x
  2. Step 2: Convert to fraction form
    89,775.06/123,891.12 = 49,488.54/x
  3. Step 3: Cross multiply
    89,775.06x = 123,891.12 × 49,488.54
  4. Step 4: Simplify right side
    89,775.06x = 6,131,190,647.76
  5. Step 5: Solve for x
    x = 6,131,190,647.76/89,775.06
  6. Step 6: Final answer
    x = 68,295.03

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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.