Home / 55,865.75-77,072.90-31,979.66

Finding the Fourth Proportional to 55,865.75, 77,072.90 and 31,979.66

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Solution

The fourth proportional to 55,865.75, 77,072.90 and 31,979.66 is: 44,119.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,865.75 : 77,072.90 = 31,979.66 : x
  2. Step 2: Convert to fraction form
    55,865.75/77,072.90 = 31,979.66/x
  3. Step 3: Cross multiply
    55,865.75x = 77,072.90 × 31,979.66
  4. Step 4: Simplify right side
    55,865.75x = 2,464,764,591.95
  5. Step 5: Solve for x
    x = 2,464,764,591.95/55,865.75
  6. Step 6: Final answer
    x = 44,119.43

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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.