Home / 79,520.38-119,280.49-20,355.96

Finding the Fourth Proportional to 79,520.38, 119,280.49 and 20,355.96

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Solution

The fourth proportional to 79,520.38, 119,280.49 and 20,355.96 is: 30,533.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,520.38 : 119,280.49 = 20,355.96 : x
  2. Step 2: Convert to fraction form
    79,520.38/119,280.49 = 20,355.96/x
  3. Step 3: Cross multiply
    79,520.38x = 119,280.49 × 20,355.96
  4. Step 4: Simplify right side
    79,520.38x = 2,428,068,883.22
  5. Step 5: Solve for x
    x = 2,428,068,883.22/79,520.38
  6. Step 6: Final answer
    x = 30,533.92

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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.