Home / 81,037.14-121,568.67-34,290.42

Finding the Fourth Proportional to 81,037.14, 121,568.67 and 34,290.42

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Solution

The fourth proportional to 81,037.14, 121,568.67 and 34,290.42 is: 51,441.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,037.14 : 121,568.67 = 34,290.42 : x
  2. Step 2: Convert to fraction form
    81,037.14/121,568.67 = 34,290.42/x
  3. Step 3: Cross multiply
    81,037.14x = 121,568.67 × 34,290.42
  4. Step 4: Simplify right side
    81,037.14x = 4,168,640,753.14
  5. Step 5: Solve for x
    x = 4,168,640,753.14/81,037.14
  6. Step 6: Final answer
    x = 51,441.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.