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Finding the Fourth Proportional to 89,953.58, 124,137.87 and 49,669.90

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Solution

The fourth proportional to 89,953.58, 124,137.87 and 49,669.90 is: 68,545.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,953.58 : 124,137.87 = 49,669.90 : x
  2. Step 2: Convert to fraction form
    89,953.58/124,137.87 = 49,669.90/x
  3. Step 3: Cross multiply
    89,953.58x = 124,137.87 × 49,669.90
  4. Step 4: Simplify right side
    89,953.58x = 6,165,914,968.42
  5. Step 5: Solve for x
    x = 6,165,914,968.42/89,953.58
  6. Step 6: Final answer
    x = 68,545.52

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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.