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Finding the Fourth Proportional to 49,066.40, 73,609.20 and 20,986.40

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Solution

The fourth proportional to 49,066.40, 73,609.20 and 20,986.40 is: 31,483.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,066.40 : 73,609.20 = 20,986.40 : x
  2. Step 2: Convert to fraction form
    49,066.40/73,609.20 = 20,986.40/x
  3. Step 3: Cross multiply
    49,066.40x = 73,609.20 × 20,986.40
  4. Step 4: Simplify right side
    49,066.40x = 1,544,792,114.88
  5. Step 5: Solve for x
    x = 1,544,792,114.88/49,066.40
  6. Step 6: Final answer
    x = 31,483.71

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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.