Home / 71,771.49-99,043.92-39,505.05

Finding the Fourth Proportional to 71,771.49, 99,043.92 and 39,505.05

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Solution

The fourth proportional to 71,771.49, 99,043.92 and 39,505.05 is: 54,516.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,771.49 : 99,043.92 = 39,505.05 : x
  2. Step 2: Convert to fraction form
    71,771.49/99,043.92 = 39,505.05/x
  3. Step 3: Cross multiply
    71,771.49x = 99,043.92 × 39,505.05
  4. Step 4: Simplify right side
    71,771.49x = 3,912,735,011.80
  5. Step 5: Solve for x
    x = 3,912,735,011.80/71,771.49
  6. Step 6: Final answer
    x = 54,516.56

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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.