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Finding the Fourth Proportional to 60,396.84, 90,604.98 and 20,419.70

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Solution

The fourth proportional to 60,396.84, 90,604.98 and 20,419.70 is: 30,632.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,396.84 : 90,604.98 = 20,419.70 : x
  2. Step 2: Convert to fraction form
    60,396.84/90,604.98 = 20,419.70/x
  3. Step 3: Cross multiply
    60,396.84x = 90,604.98 × 20,419.70
  4. Step 4: Simplify right side
    60,396.84x = 1,850,126,057.08
  5. Step 5: Solve for x
    x = 1,850,126,057.08/60,396.84
  6. Step 6: Final answer
    x = 30,632.83

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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.