Home / 86,212.35-129,286.26-30,038.04

Finding the Fourth Proportional to 86,212.35, 129,286.26 and 30,038.04

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Solution

The fourth proportional to 86,212.35, 129,286.26 and 30,038.04 is: 45,045.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,212.35 : 129,286.26 = 30,038.04 : x
  2. Step 2: Convert to fraction form
    86,212.35/129,286.26 = 30,038.04/x
  3. Step 3: Cross multiply
    86,212.35x = 129,286.26 × 30,038.04
  4. Step 4: Simplify right side
    86,212.35x = 3,883,505,849.33
  5. Step 5: Solve for x
    x = 3,883,505,849.33/86,212.35
  6. Step 6: Final answer
    x = 45,045.82

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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.