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Finding the Fourth Proportional to 90,540.54, 124,579.80 and 88,222.32

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Solution

The fourth proportional to 90,540.54, 124,579.80 and 88,222.32 is: 121,390.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,540.54 : 124,579.80 = 88,222.32 : x
  2. Step 2: Convert to fraction form
    90,540.54/124,579.80 = 88,222.32/x
  3. Step 3: Cross multiply
    90,540.54x = 124,579.80 × 88,222.32
  4. Step 4: Simplify right side
    90,540.54x = 10,990,718,981.14
  5. Step 5: Solve for x
    x = 10,990,718,981.14/90,540.54
  6. Step 6: Final answer
    x = 121,390.03

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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.