Home / 55,113.30-76,057.23-31,239.47

Finding the Fourth Proportional to 55,113.30, 76,057.23 and 31,239.47

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Solution

The fourth proportional to 55,113.30, 76,057.23 and 31,239.47 is: 43,110.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,113.30 : 76,057.23 = 31,239.47 : x
  2. Step 2: Convert to fraction form
    55,113.30/76,057.23 = 31,239.47/x
  3. Step 3: Cross multiply
    55,113.30x = 76,057.23 × 31,239.47
  4. Step 4: Simplify right side
    55,113.30x = 2,375,987,174.58
  5. Step 5: Solve for x
    x = 2,375,987,174.58/55,113.30
  6. Step 6: Final answer
    x = 43,110.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.