Home / 79,519.42-119,276.40-20,355.61

Finding the Fourth Proportional to 79,519.42, 119,276.40 and 20,355.61

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Solution

The fourth proportional to 79,519.42, 119,276.40 and 20,355.61 is: 30,532.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,519.42 : 119,276.40 = 20,355.61 : x
  2. Step 2: Convert to fraction form
    79,519.42/119,276.40 = 20,355.61/x
  3. Step 3: Cross multiply
    79,519.42x = 119,276.40 × 20,355.61
  4. Step 4: Simplify right side
    79,519.42x = 2,427,943,880.60
  5. Step 5: Solve for x
    x = 2,427,943,880.60/79,519.42
  6. Step 6: Final answer
    x = 30,532.72

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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.