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Finding the Fourth Proportional to 79,343.86, 119,015.27 and 20,179.01

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Solution

The fourth proportional to 79,343.86, 119,015.27 and 20,179.01 is: 30,268.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,343.86 : 119,015.27 = 20,179.01 : x
  2. Step 2: Convert to fraction form
    79,343.86/119,015.27 = 20,179.01/x
  3. Step 3: Cross multiply
    79,343.86x = 119,015.27 × 20,179.01
  4. Step 4: Simplify right side
    79,343.86x = 2,401,610,671.47
  5. Step 5: Solve for x
    x = 2,401,610,671.47/79,343.86
  6. Step 6: Final answer
    x = 30,268.39

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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.