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Finding the Fourth Proportional to 79,497.27, 119,245.32 and 20,332.80

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Solution

The fourth proportional to 79,497.27, 119,245.32 and 20,332.80 is: 30,499.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,497.27 : 119,245.32 = 20,332.80 : x
  2. Step 2: Convert to fraction form
    79,497.27/119,245.32 = 20,332.80/x
  3. Step 3: Cross multiply
    79,497.27x = 119,245.32 × 20,332.80
  4. Step 4: Simplify right side
    79,497.27x = 2,424,591,242.50
  5. Step 5: Solve for x
    x = 2,424,591,242.50/79,497.27
  6. Step 6: Final answer
    x = 30,499.05

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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.