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Finding the Fourth Proportional to 66,572.64, 99,837 and 22,187.16

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Solution

The fourth proportional to 66,572.64, 99,837 and 22,187.16 is: 33,273.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,572.64 : 99,837 = 22,187.16 : x
  2. Step 2: Convert to fraction form
    66,572.64/99,837 = 22,187.16/x
  3. Step 3: Cross multiply
    66,572.64x = 99,837 × 22,187.16
  4. Step 4: Simplify right side
    66,572.64x = 2,215,099,492.92
  5. Step 5: Solve for x
    x = 2,215,099,492.92/66,572.64
  6. Step 6: Final answer
    x = 33,273.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.