Home / 84,239.94-126,351.26-28,074

Finding the Fourth Proportional to 84,239.94, 126,351.26 and 28,074

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Solution

The fourth proportional to 84,239.94, 126,351.26 and 28,074 is: 42,108.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,239.94 : 126,351.26 = 28,074 : x
  2. Step 2: Convert to fraction form
    84,239.94/126,351.26 = 28,074/x
  3. Step 3: Cross multiply
    84,239.94x = 126,351.26 × 28,074
  4. Step 4: Simplify right side
    84,239.94x = 3,547,185,273.24
  5. Step 5: Solve for x
    x = 3,547,185,273.24/84,239.94
  6. Step 6: Final answer
    x = 42,108.12

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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.