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Finding the Fourth Proportional to 79,712.82, 119,642.94 and 40,297.41

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Solution

The fourth proportional to 79,712.82, 119,642.94 and 40,297.41 is: 60,483.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,712.82 : 119,642.94 = 40,297.41 : x
  2. Step 2: Convert to fraction form
    79,712.82/119,642.94 = 40,297.41/x
  3. Step 3: Cross multiply
    79,712.82x = 119,642.94 × 40,297.41
  4. Step 4: Simplify right side
    79,712.82x = 4,821,300,606.79
  5. Step 5: Solve for x
    x = 4,821,300,606.79/79,712.82
  6. Step 6: Final answer
    x = 60,483.38

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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.