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Finding the Fourth Proportional to 79,574.70, 119,359.22 and 20,410.95

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Solution

The fourth proportional to 79,574.70, 119,359.22 and 20,410.95 is: 30,615.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,574.70 : 119,359.22 = 20,410.95 : x
  2. Step 2: Convert to fraction form
    79,574.70/119,359.22 = 20,410.95/x
  3. Step 3: Cross multiply
    79,574.70x = 119,359.22 × 20,410.95
  4. Step 4: Simplify right side
    79,574.70x = 2,436,235,531.81
  5. Step 5: Solve for x
    x = 2,436,235,531.81/79,574.70
  6. Step 6: Final answer
    x = 30,615.70

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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.