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Finding the Fourth Proportional to 79,858.96, 119,583.84 and 77,493.90

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Solution

The fourth proportional to 79,858.96, 119,583.84 and 77,493.90 is: 116,042.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,858.96 : 119,583.84 = 77,493.90 : x
  2. Step 2: Convert to fraction form
    79,858.96/119,583.84 = 77,493.90/x
  3. Step 3: Cross multiply
    79,858.96x = 119,583.84 × 77,493.90
  4. Step 4: Simplify right side
    79,858.96x = 9,267,018,138.58
  5. Step 5: Solve for x
    x = 9,267,018,138.58/79,858.96
  6. Step 6: Final answer
    x = 116,042.31

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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.