Home / 79,519.79-119,279.60-20,355.36

Finding the Fourth Proportional to 79,519.79, 119,279.60 and 20,355.36

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Solution

The fourth proportional to 79,519.79, 119,279.60 and 20,355.36 is: 30,533.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,519.79 : 119,279.60 = 20,355.36 : x
  2. Step 2: Convert to fraction form
    79,519.79/119,279.60 = 20,355.36/x
  3. Step 3: Cross multiply
    79,519.79x = 119,279.60 × 20,355.36
  4. Step 4: Simplify right side
    79,519.79x = 2,427,979,096.88
  5. Step 5: Solve for x
    x = 2,427,979,096.88/79,519.79
  6. Step 6: Final answer
    x = 30,533.02

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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.