Home / 84,013.02-126,021.96-31,412.46

Finding the Fourth Proportional to 84,013.02, 126,021.96 and 31,412.46

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Solution

The fourth proportional to 84,013.02, 126,021.96 and 31,412.46 is: 47,119.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,013.02 : 126,021.96 = 31,412.46 : x
  2. Step 2: Convert to fraction form
    84,013.02/126,021.96 = 31,412.46/x
  3. Step 3: Cross multiply
    84,013.02x = 126,021.96 × 31,412.46
  4. Step 4: Simplify right side
    84,013.02x = 3,958,659,777.62
  5. Step 5: Solve for x
    x = 3,958,659,777.62/84,013.02
  6. Step 6: Final answer
    x = 47,119.60

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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.