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Finding the Fourth Proportional to 60,605.68, 90,910.04 and 20,624.64

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Solution

The fourth proportional to 60,605.68, 90,910.04 and 20,624.64 is: 30,937.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,605.68 : 90,910.04 = 20,624.64 : x
  2. Step 2: Convert to fraction form
    60,605.68/90,910.04 = 20,624.64/x
  3. Step 3: Cross multiply
    60,605.68x = 90,910.04 × 20,624.64
  4. Step 4: Simplify right side
    60,605.68x = 1,874,986,847.39
  5. Step 5: Solve for x
    x = 1,874,986,847.39/60,605.68
  6. Step 6: Final answer
    x = 30,937.48

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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.