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Finding the Fourth Proportional to 79,969.95, 119,883.64 and 40,506.75

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Solution

The fourth proportional to 79,969.95, 119,883.64 and 40,506.75 is: 60,724.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,969.95 : 119,883.64 = 40,506.75 : x
  2. Step 2: Convert to fraction form
    79,969.95/119,883.64 = 40,506.75/x
  3. Step 3: Cross multiply
    79,969.95x = 119,883.64 × 40,506.75
  4. Step 4: Simplify right side
    79,969.95x = 4,856,095,832.62
  5. Step 5: Solve for x
    x = 4,856,095,832.62/79,969.95
  6. Step 6: Final answer
    x = 60,724.01

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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.