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Finding the Fourth Proportional to 89,959.87, 124,145.14 and 49,672.87

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Solution

The fourth proportional to 89,959.87, 124,145.14 and 49,672.87 is: 68,548.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,959.87 : 124,145.14 = 49,672.87 : x
  2. Step 2: Convert to fraction form
    89,959.87/124,145.14 = 49,672.87/x
  3. Step 3: Cross multiply
    89,959.87x = 124,145.14 × 49,672.87
  4. Step 4: Simplify right side
    89,959.87x = 6,166,644,779.63
  5. Step 5: Solve for x
    x = 6,166,644,779.63/89,959.87
  6. Step 6: Final answer
    x = 68,548.84

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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.