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Finding the Fourth Proportional to 88,694.84, 132,971.60 and 51,212.40

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Solution

The fourth proportional to 88,694.84, 132,971.60 and 51,212.40 is: 76,777.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,694.84 : 132,971.60 = 51,212.40 : x
  2. Step 2: Convert to fraction form
    88,694.84/132,971.60 = 51,212.40/x
  3. Step 3: Cross multiply
    88,694.84x = 132,971.60 × 51,212.40
  4. Step 4: Simplify right side
    88,694.84x = 6,809,794,511.78
  5. Step 5: Solve for x
    x = 6,809,794,511.78/88,694.84
  6. Step 6: Final answer
    x = 76,777.80

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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.