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Finding the Fourth Proportional to 89,318, 133,936.86 and 64,253

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Solution

The fourth proportional to 89,318, 133,936.86 and 64,253 is: 96,350.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,318 : 133,936.86 = 64,253 : x
  2. Step 2: Convert to fraction form
    89,318/133,936.86 = 64,253/x
  3. Step 3: Cross multiply
    89,318x = 133,936.86 × 64,253
  4. Step 4: Simplify right side
    89,318x = 8,605,845,065.58
  5. Step 5: Solve for x
    x = 8,605,845,065.58/89,318
  6. Step 6: Final answer
    x = 96,350.62

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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.