Home / 84,131.12-126,181.88-30,812.08

Finding the Fourth Proportional to 84,131.12, 126,181.88 and 30,812.08

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Solution

The fourth proportional to 84,131.12, 126,181.88 and 30,812.08 is: 46,212.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,131.12 : 126,181.88 = 30,812.08 : x
  2. Step 2: Convert to fraction form
    84,131.12/126,181.88 = 30,812.08/x
  3. Step 3: Cross multiply
    84,131.12x = 126,181.88 × 30,812.08
  4. Step 4: Simplify right side
    84,131.12x = 3,887,926,181.11
  5. Step 5: Solve for x
    x = 3,887,926,181.11/84,131.12
  6. Step 6: Final answer
    x = 46,212.70

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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.