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Finding the Fourth Proportional to 88,231.64, 132,347.88 and 21,671.78

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Solution

The fourth proportional to 88,231.64, 132,347.88 and 21,671.78 is: 32,507.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,231.64 : 132,347.88 = 21,671.78 : x
  2. Step 2: Convert to fraction form
    88,231.64/132,347.88 = 21,671.78/x
  3. Step 3: Cross multiply
    88,231.64x = 132,347.88 × 21,671.78
  4. Step 4: Simplify right side
    88,231.64x = 2,868,213,477.09
  5. Step 5: Solve for x
    x = 2,868,213,477.09/88,231.64
  6. Step 6: Final answer
    x = 32,507.77

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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.