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Finding the Fourth Proportional to 79,503.62, 119,254.21 and 20,338.79

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Solution

The fourth proportional to 79,503.62, 119,254.21 and 20,338.79 is: 30,507.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,503.62 : 119,254.21 = 20,338.79 : x
  2. Step 2: Convert to fraction form
    79,503.62/119,254.21 = 20,338.79/x
  3. Step 3: Cross multiply
    79,503.62x = 119,254.21 × 20,338.79
  4. Step 4: Simplify right side
    79,503.62x = 2,425,486,333.81
  5. Step 5: Solve for x
    x = 2,425,486,333.81/79,503.62
  6. Step 6: Final answer
    x = 30,507.87

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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.