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Finding the Fourth Proportional to 89,665.95, 123,739.04 and 49,379.59

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Solution

The fourth proportional to 89,665.95, 123,739.04 and 49,379.59 is: 68,143.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,665.95 : 123,739.04 = 49,379.59 : x
  2. Step 2: Convert to fraction form
    89,665.95/123,739.04 = 49,379.59/x
  3. Step 3: Cross multiply
    89,665.95x = 123,739.04 × 49,379.59
  4. Step 4: Simplify right side
    89,665.95x = 6,110,183,340.32
  5. Step 5: Solve for x
    x = 6,110,183,340.32/89,665.95
  6. Step 6: Final answer
    x = 68,143.85

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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.