Home / 83,406.06-125,109.90-21,076.56

Finding the Fourth Proportional to 83,406.06, 125,109.90 and 21,076.56

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Solution

The fourth proportional to 83,406.06, 125,109.90 and 21,076.56 is: 31,615.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,406.06 : 125,109.90 = 21,076.56 : x
  2. Step 2: Convert to fraction form
    83,406.06/125,109.90 = 21,076.56/x
  3. Step 3: Cross multiply
    83,406.06x = 125,109.90 × 21,076.56
  4. Step 4: Simplify right side
    83,406.06x = 2,636,886,313.94
  5. Step 5: Solve for x
    x = 2,636,886,313.94/83,406.06
  6. Step 6: Final answer
    x = 31,615.04

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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.