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Finding the Fourth Proportional to 88,871.80, 133,365.30 and 51,431.80

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Solution

The fourth proportional to 88,871.80, 133,365.30 and 51,431.80 is: 77,181.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,871.80 : 133,365.30 = 51,431.80 : x
  2. Step 2: Convert to fraction form
    88,871.80/133,365.30 = 51,431.80/x
  3. Step 3: Cross multiply
    88,871.80x = 133,365.30 × 51,431.80
  4. Step 4: Simplify right side
    88,871.80x = 6,859,217,436.54
  5. Step 5: Solve for x
    x = 6,859,217,436.54/88,871.80
  6. Step 6: Final answer
    x = 77,181.03

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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.