Home / 84,234.72-126,348.14-21,055.26

Finding the Fourth Proportional to 84,234.72, 126,348.14 and 21,055.26

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Solution

The fourth proportional to 84,234.72, 126,348.14 and 21,055.26 is: 31,581.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,234.72 : 126,348.14 = 21,055.26 : x
  2. Step 2: Convert to fraction form
    84,234.72/126,348.14 = 21,055.26/x
  3. Step 3: Cross multiply
    84,234.72x = 126,348.14 × 21,055.26
  4. Step 4: Simplify right side
    84,234.72x = 2,660,292,938.22
  5. Step 5: Solve for x
    x = 2,660,292,938.22/84,234.72
  6. Step 6: Final answer
    x = 31,581.91

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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.