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Finding the Fourth Proportional to 69,969.40, 96,556.79 and 38,138.42

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Solution

The fourth proportional to 69,969.40, 96,556.79 and 38,138.42 is: 52,630.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,969.40 : 96,556.79 = 38,138.42 : x
  2. Step 2: Convert to fraction form
    69,969.40/96,556.79 = 38,138.42/x
  3. Step 3: Cross multiply
    69,969.40x = 96,556.79 × 38,138.42
  4. Step 4: Simplify right side
    69,969.40x = 3,682,523,220.18
  5. Step 5: Solve for x
    x = 3,682,523,220.18/69,969.40
  6. Step 6: Final answer
    x = 52,630.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.