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Finding the Fourth Proportional to 73,188.77, 100,989.02 and 42,568.64

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Solution

The fourth proportional to 73,188.77, 100,989.02 and 42,568.64 is: 58,738.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,188.77 : 100,989.02 = 42,568.64 : x
  2. Step 2: Convert to fraction form
    73,188.77/100,989.02 = 42,568.64/x
  3. Step 3: Cross multiply
    73,188.77x = 100,989.02 × 42,568.64
  4. Step 4: Simplify right side
    73,188.77x = 4,298,964,518.54
  5. Step 5: Solve for x
    x = 4,298,964,518.54/73,188.77
  6. Step 6: Final answer
    x = 58,738.04

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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.