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Finding the Fourth Proportional to 89,911.89, 124,078.86 and 49,625.73

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Solution

The fourth proportional to 89,911.89, 124,078.86 and 49,625.73 is: 68,483.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,911.89 : 124,078.86 = 49,625.73 : x
  2. Step 2: Convert to fraction form
    89,911.89/124,078.86 = 49,625.73/x
  3. Step 3: Cross multiply
    89,911.89x = 124,078.86 × 49,625.73
  4. Step 4: Simplify right side
    89,911.89x = 6,157,504,005.07
  5. Step 5: Solve for x
    x = 6,157,504,005.07/89,911.89
  6. Step 6: Final answer
    x = 68,483.76

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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.