Home / 84,221.46-126,289.93-28,041.78

Finding the Fourth Proportional to 84,221.46, 126,289.93 and 28,041.78

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Solution

The fourth proportional to 84,221.46, 126,289.93 and 28,041.78 is: 42,048.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,221.46 : 126,289.93 = 28,041.78 : x
  2. Step 2: Convert to fraction form
    84,221.46/126,289.93 = 28,041.78/x
  3. Step 3: Cross multiply
    84,221.46x = 126,289.93 × 28,041.78
  4. Step 4: Simplify right side
    84,221.46x = 3,541,394,433.28
  5. Step 5: Solve for x
    x = 3,541,394,433.28/84,221.46
  6. Step 6: Final answer
    x = 42,048.60

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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.