Home / 77,972.05-107,601.35-42,161.97

Finding the Fourth Proportional to 77,972.05, 107,601.35 and 42,161.97

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Solution

The fourth proportional to 77,972.05, 107,601.35 and 42,161.97 is: 58,183.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,972.05 : 107,601.35 = 42,161.97 : x
  2. Step 2: Convert to fraction form
    77,972.05/107,601.35 = 42,161.97/x
  3. Step 3: Cross multiply
    77,972.05x = 107,601.35 × 42,161.97
  4. Step 4: Simplify right side
    77,972.05x = 4,536,684,890.66
  5. Step 5: Solve for x
    x = 4,536,684,890.66/77,972.05
  6. Step 6: Final answer
    x = 58,183.48

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1.5x scale

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.