Home / 55,915.88-77,163.91-30,765.38

Finding the Fourth Proportional to 55,915.88, 77,163.91 and 30,765.38

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Solution

The fourth proportional to 55,915.88, 77,163.91 and 30,765.38 is: 42,456.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,915.88 : 77,163.91 = 30,765.38 : x
  2. Step 2: Convert to fraction form
    55,915.88/77,163.91 = 30,765.38/x
  3. Step 3: Cross multiply
    55,915.88x = 77,163.91 × 30,765.38
  4. Step 4: Simplify right side
    55,915.88x = 2,373,976,550.70
  5. Step 5: Solve for x
    x = 2,373,976,550.70/55,915.88
  6. Step 6: Final answer
    x = 42,456.22

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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.