Home / 84,418.72-126,656.98-31,843.24

Finding the Fourth Proportional to 84,418.72, 126,656.98 and 31,843.24

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Solution

The fourth proportional to 84,418.72, 126,656.98 and 31,843.24 is: 47,775.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,418.72 : 126,656.98 = 31,843.24 : x
  2. Step 2: Convert to fraction form
    84,418.72/126,656.98 = 31,843.24/x
  3. Step 3: Cross multiply
    84,418.72x = 126,656.98 × 31,843.24
  4. Step 4: Simplify right side
    84,418.72x = 4,033,168,611.82
  5. Step 5: Solve for x
    x = 4,033,168,611.82/84,418.72
  6. Step 6: Final answer
    x = 47,775.76

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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.