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Finding the Fourth Proportional to 81,988.77, 122,983.18 and 63,296.09

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Solution

The fourth proportional to 81,988.77, 122,983.18 and 63,296.09 is: 94,944.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,988.77 : 122,983.18 = 63,296.09 : x
  2. Step 2: Convert to fraction form
    81,988.77/122,983.18 = 63,296.09/x
  3. Step 3: Cross multiply
    81,988.77x = 122,983.18 × 63,296.09
  4. Step 4: Simplify right side
    81,988.77x = 7,784,354,578.98
  5. Step 5: Solve for x
    x = 7,784,354,578.98/81,988.77
  6. Step 6: Final answer
    x = 94,944.16

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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.