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Finding the Fourth Proportional to 89,234.40, 133,809.21 and 51,805.98

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Solution

The fourth proportional to 89,234.40, 133,809.21 and 51,805.98 is: 77,684.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,234.40 : 133,809.21 = 51,805.98 : x
  2. Step 2: Convert to fraction form
    89,234.40/133,809.21 = 51,805.98/x
  3. Step 3: Cross multiply
    89,234.40x = 133,809.21 × 51,805.98
  4. Step 4: Simplify right side
    89,234.40x = 6,932,117,257.08
  5. Step 5: Solve for x
    x = 6,932,117,257.08/89,234.40
  6. Step 6: Final answer
    x = 77,684.36

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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.