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Finding the Fourth Proportional to 79,447.17, 119,168.93 and 39,993.69

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Solution

The fourth proportional to 79,447.17, 119,168.93 and 39,993.69 is: 59,989.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,447.17 : 119,168.93 = 39,993.69 : x
  2. Step 2: Convert to fraction form
    79,447.17/119,168.93 = 39,993.69/x
  3. Step 3: Cross multiply
    79,447.17x = 119,168.93 × 39,993.69
  4. Step 4: Simplify right side
    79,447.17x = 4,766,005,344.04
  5. Step 5: Solve for x
    x = 4,766,005,344.04/79,447.17
  6. Step 6: Final answer
    x = 59,989.62

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1.5x scale

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.