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Finding the Fourth Proportional to 88,083.60, 132,384.60 and 76,678.80

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Solution

The fourth proportional to 88,083.60, 132,384.60 and 76,678.80 is: 115,243.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,083.60 : 132,384.60 = 76,678.80 : x
  2. Step 2: Convert to fraction form
    88,083.60/132,384.60 = 76,678.80/x
  3. Step 3: Cross multiply
    88,083.60x = 132,384.60 × 76,678.80
  4. Step 4: Simplify right side
    88,083.60x = 10,151,092,266.48
  5. Step 5: Solve for x
    x = 10,151,092,266.48/88,083.60
  6. Step 6: Final answer
    x = 115,243.84

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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.