Home / 84,019.62-126,014.76-31,418.22

Finding the Fourth Proportional to 84,019.62, 126,014.76 and 31,418.22

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Solution

The fourth proportional to 84,019.62, 126,014.76 and 31,418.22 is: 47,121.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,019.62 : 126,014.76 = 31,418.22 : x
  2. Step 2: Convert to fraction form
    84,019.62/126,014.76 = 31,418.22/x
  3. Step 3: Cross multiply
    84,019.62x = 126,014.76 × 31,418.22
  4. Step 4: Simplify right side
    84,019.62x = 3,959,159,452.93
  5. Step 5: Solve for x
    x = 3,959,159,452.93/84,019.62
  6. Step 6: Final answer
    x = 47,121.84

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1.5x scale

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.