Home / 84,442.85-126,629.20-31,137.86

Finding the Fourth Proportional to 84,442.85, 126,629.20 and 31,137.86

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Solution

The fourth proportional to 84,442.85, 126,629.20 and 31,137.86 is: 46,693.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,442.85 : 126,629.20 = 31,137.86 : x
  2. Step 2: Convert to fraction form
    84,442.85/126,629.20 = 31,137.86/x
  3. Step 3: Cross multiply
    84,442.85x = 126,629.20 × 31,137.86
  4. Step 4: Simplify right side
    84,442.85x = 3,942,962,301.51
  5. Step 5: Solve for x
    x = 3,942,962,301.51/84,442.85
  6. Step 6: Final answer
    x = 46,693.86

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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.