Home / 84,220.96-126,289.18-28,041.28

Finding the Fourth Proportional to 84,220.96, 126,289.18 and 28,041.28

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Solution

The fourth proportional to 84,220.96, 126,289.18 and 28,041.28 is: 42,047.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,220.96 : 126,289.18 = 28,041.28 : x
  2. Step 2: Convert to fraction form
    84,220.96/126,289.18 = 28,041.28/x
  3. Step 3: Cross multiply
    84,220.96x = 126,289.18 × 28,041.28
  4. Step 4: Simplify right side
    84,220.96x = 3,541,310,257.35
  5. Step 5: Solve for x
    x = 3,541,310,257.35/84,220.96
  6. Step 6: Final answer
    x = 42,047.85

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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.