Home / 84,234.74-126,351.60-21,054.55

Finding the Fourth Proportional to 84,234.74, 126,351.60 and 21,054.55

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Solution

The fourth proportional to 84,234.74, 126,351.60 and 21,054.55 is: 31,581.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,234.74 : 126,351.60 = 21,054.55 : x
  2. Step 2: Convert to fraction form
    84,234.74/126,351.60 = 21,054.55/x
  3. Step 3: Cross multiply
    84,234.74x = 126,351.60 × 21,054.55
  4. Step 4: Simplify right side
    84,234.74x = 2,660,275,448.02
  5. Step 5: Solve for x
    x = 2,660,275,448.02/84,234.74
  6. Step 6: Final answer
    x = 31,581.69

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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.