Home / 56,691.82-78,234.55-31,198.69

Finding the Fourth Proportional to 56,691.82, 78,234.55 and 31,198.69

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Solution

The fourth proportional to 56,691.82, 78,234.55 and 31,198.69 is: 43,054.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,691.82 : 78,234.55 = 31,198.69 : x
  2. Step 2: Convert to fraction form
    56,691.82/78,234.55 = 31,198.69/x
  3. Step 3: Cross multiply
    56,691.82x = 78,234.55 × 31,198.69
  4. Step 4: Simplify right side
    56,691.82x = 2,440,815,472.74
  5. Step 5: Solve for x
    x = 2,440,815,472.74/56,691.82
  6. Step 6: Final answer
    x = 43,054.10

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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.