Home / 71,101.28-98,111.37-39,268.28

Finding the Fourth Proportional to 71,101.28, 98,111.37 and 39,268.28

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Solution

The fourth proportional to 71,101.28, 98,111.37 and 39,268.28 is: 54,185.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,101.28 : 98,111.37 = 39,268.28 : x
  2. Step 2: Convert to fraction form
    71,101.28/98,111.37 = 39,268.28/x
  3. Step 3: Cross multiply
    71,101.28x = 98,111.37 × 39,268.28
  4. Step 4: Simplify right side
    71,101.28x = 3,852,664,503.07
  5. Step 5: Solve for x
    x = 3,852,664,503.07/71,101.28
  6. Step 6: Final answer
    x = 54,185.59

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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.