Home / 71,471.27-98,634.77-39,640.19

Finding the Fourth Proportional to 71,471.27, 98,634.77 and 39,640.19

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Solution

The fourth proportional to 71,471.27, 98,634.77 and 39,640.19 is: 54,705.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,471.27 : 98,634.77 = 39,640.19 : x
  2. Step 2: Convert to fraction form
    71,471.27/98,634.77 = 39,640.19/x
  3. Step 3: Cross multiply
    71,471.27x = 98,634.77 × 39,640.19
  4. Step 4: Simplify right side
    71,471.27x = 3,909,901,369.09
  5. Step 5: Solve for x
    x = 3,909,901,369.09/71,471.27
  6. Step 6: Final answer
    x = 54,705.92

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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.