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Finding the Fourth Proportional to 89,694.68, 123,779.48 and 49,409.87

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Solution

The fourth proportional to 89,694.68, 123,779.48 and 49,409.87 is: 68,186.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,694.68 : 123,779.48 = 49,409.87 : x
  2. Step 2: Convert to fraction form
    89,694.68/123,779.48 = 49,409.87/x
  3. Step 3: Cross multiply
    89,694.68x = 123,779.48 × 49,409.87
  4. Step 4: Simplify right side
    89,694.68x = 6,115,927,149.52
  5. Step 5: Solve for x
    x = 6,115,927,149.52/89,694.68
  6. Step 6: Final answer
    x = 68,186.07

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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.