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Finding the Fourth Proportional to 89,311, 133,926.36 and 64,246

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Solution

The fourth proportional to 89,311, 133,926.36 and 64,246 is: 96,340.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,311 : 133,926.36 = 64,246 : x
  2. Step 2: Convert to fraction form
    89,311/133,926.36 = 64,246/x
  3. Step 3: Cross multiply
    89,311x = 133,926.36 × 64,246
  4. Step 4: Simplify right side
    89,311x = 8,604,232,924.56
  5. Step 5: Solve for x
    x = 8,604,232,924.56/89,311
  6. Step 6: Final answer
    x = 96,340.13

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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.