Home / 55,129.28-76,080-33,920.96

Finding the Fourth Proportional to 55,129.28, 76,080 and 33,920.96

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Solution

The fourth proportional to 55,129.28, 76,080 and 33,920.96 is: 46,811.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,129.28 : 76,080 = 33,920.96 : x
  2. Step 2: Convert to fraction form
    55,129.28/76,080 = 33,920.96/x
  3. Step 3: Cross multiply
    55,129.28x = 76,080 × 33,920.96
  4. Step 4: Simplify right side
    55,129.28x = 2,580,706,636.80
  5. Step 5: Solve for x
    x = 2,580,706,636.80/55,129.28
  6. Step 6: Final answer
    x = 46,811.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.