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Finding the Fourth Proportional to 89,388.76, 133,879.02 and 42,674.44

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Solution

The fourth proportional to 89,388.76, 133,879.02 and 42,674.44 is: 63,914.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,388.76 : 133,879.02 = 42,674.44 : x
  2. Step 2: Convert to fraction form
    89,388.76/133,879.02 = 42,674.44/x
  3. Step 3: Cross multiply
    89,388.76x = 133,879.02 × 42,674.44
  4. Step 4: Simplify right side
    89,388.76x = 5,713,212,206.25
  5. Step 5: Solve for x
    x = 5,713,212,206.25/89,388.76
  6. Step 6: Final answer
    x = 63,914.21

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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.