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Finding the Fourth Proportional to 88,405.80, 132,608.70 and 21,845.40

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Solution

The fourth proportional to 88,405.80, 132,608.70 and 21,845.40 is: 32,768.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,405.80 : 132,608.70 = 21,845.40 : x
  2. Step 2: Convert to fraction form
    88,405.80/132,608.70 = 21,845.40/x
  3. Step 3: Cross multiply
    88,405.80x = 132,608.70 × 21,845.40
  4. Step 4: Simplify right side
    88,405.80x = 2,896,890,094.98
  5. Step 5: Solve for x
    x = 2,896,890,094.98/88,405.80
  6. Step 6: Final answer
    x = 32,768.10

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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.