Home / 89,961.78-124,150.95-55,990.38

Finding the Fourth Proportional to 89,961.78, 124,150.95 and 55,990.38

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Solution

The fourth proportional to 89,961.78, 124,150.95 and 55,990.38 is: 77,269.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,961.78 : 124,150.95 = 55,990.38 : x
  2. Step 2: Convert to fraction form
    89,961.78/124,150.95 = 55,990.38/x
  3. Step 3: Cross multiply
    89,961.78x = 124,150.95 × 55,990.38
  4. Step 4: Simplify right side
    89,961.78x = 6,951,258,867.86
  5. Step 5: Solve for x
    x = 6,951,258,867.86/89,961.78
  6. Step 6: Final answer
    x = 77,269.02

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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.