Home / 71,716.23-98,969.67-39,885.12

Finding the Fourth Proportional to 71,716.23, 98,969.67 and 39,885.12

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Solution

The fourth proportional to 71,716.23, 98,969.67 and 39,885.12 is: 55,042.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,716.23 : 98,969.67 = 39,885.12 : x
  2. Step 2: Convert to fraction form
    71,716.23/98,969.67 = 39,885.12/x
  3. Step 3: Cross multiply
    71,716.23x = 98,969.67 × 39,885.12
  4. Step 4: Simplify right side
    71,716.23x = 3,947,417,164.31
  5. Step 5: Solve for x
    x = 3,947,417,164.31/71,716.23
  6. Step 6: Final answer
    x = 55,042.17

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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.