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Finding the Fourth Proportional to 79,715.82, 119,647.44 and 40,300.41

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Solution

The fourth proportional to 79,715.82, 119,647.44 and 40,300.41 is: 60,487.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,715.82 : 119,647.44 = 40,300.41 : x
  2. Step 2: Convert to fraction form
    79,715.82/119,647.44 = 40,300.41/x
  3. Step 3: Cross multiply
    79,715.82x = 119,647.44 × 40,300.41
  4. Step 4: Simplify right side
    79,715.82x = 4,821,840,887.45
  5. Step 5: Solve for x
    x = 4,821,840,887.45/79,715.82
  6. Step 6: Final answer
    x = 60,487.88

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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.