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Finding the Fourth Proportional to 71,787.39, 99,040.02 and 71,676.67

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Solution

The fourth proportional to 71,787.39, 99,040.02 and 71,676.67 is: 98,887.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,787.39 : 99,040.02 = 71,676.67 : x
  2. Step 2: Convert to fraction form
    71,787.39/99,040.02 = 71,676.67/x
  3. Step 3: Cross multiply
    71,787.39x = 99,040.02 × 71,676.67
  4. Step 4: Simplify right side
    71,787.39x = 7,098,858,830.33
  5. Step 5: Solve for x
    x = 7,098,858,830.33/71,787.39
  6. Step 6: Final answer
    x = 98,887.27

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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.