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Finding the Fourth Proportional to 89,347.64, 133,927.11 and 68,241.71

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Solution

The fourth proportional to 89,347.64, 133,927.11 and 68,241.71 is: 102,290.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,347.64 : 133,927.11 = 68,241.71 : x
  2. Step 2: Convert to fraction form
    89,347.64/133,927.11 = 68,241.71/x
  3. Step 3: Cross multiply
    89,347.64x = 133,927.11 × 68,241.71
  4. Step 4: Simplify right side
    89,347.64x = 9,139,415,336.58
  5. Step 5: Solve for x
    x = 9,139,415,336.58/89,347.64
  6. Step 6: Final answer
    x = 102,290.51

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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.