Home / 71,771.38-99,033.30-39,940.18

Finding the Fourth Proportional to 71,771.38, 99,033.30 and 39,940.18

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Solution

The fourth proportional to 71,771.38, 99,033.30 and 39,940.18 is: 55,111.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,771.38 : 99,033.30 = 39,940.18 : x
  2. Step 2: Convert to fraction form
    71,771.38/99,033.30 = 39,940.18/x
  3. Step 3: Cross multiply
    71,771.38x = 99,033.30 × 39,940.18
  4. Step 4: Simplify right side
    71,771.38x = 3,955,407,827.99
  5. Step 5: Solve for x
    x = 3,955,407,827.99/71,771.38
  6. Step 6: Final answer
    x = 55,111.21

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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.