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Finding the Fourth Proportional to 88,812.80, 132,830.40 and 67,817.60

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Solution

The fourth proportional to 88,812.80, 132,830.40 and 67,817.60 is: 101,429.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,812.80 : 132,830.40 = 67,817.60 : x
  2. Step 2: Convert to fraction form
    88,812.80/132,830.40 = 67,817.60/x
  3. Step 3: Cross multiply
    88,812.80x = 132,830.40 × 67,817.60
  4. Step 4: Simplify right side
    88,812.80x = 9,008,238,935.04
  5. Step 5: Solve for x
    x = 9,008,238,935.04/88,812.80
  6. Step 6: Final answer
    x = 101,429.51

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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.