Home / 84,131.46-126,162.63-31,513.86

Finding the Fourth Proportional to 84,131.46, 126,162.63 and 31,513.86

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Solution

The fourth proportional to 84,131.46, 126,162.63 and 31,513.86 is: 47,257.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,131.46 : 126,162.63 = 31,513.86 : x
  2. Step 2: Convert to fraction form
    84,131.46/126,162.63 = 31,513.86/x
  3. Step 3: Cross multiply
    84,131.46x = 126,162.63 × 31,513.86
  4. Step 4: Simplify right side
    84,131.46x = 3,975,871,459.05
  5. Step 5: Solve for x
    x = 3,975,871,459.05/84,131.46
  6. Step 6: Final answer
    x = 47,257.84

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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.