Home / 56,257.12-77,631.78-31,105

Finding the Fourth Proportional to 56,257.12, 77,631.78 and 31,105

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Solution

The fourth proportional to 56,257.12, 77,631.78 and 31,105 is: 42,923.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,257.12 : 77,631.78 = 31,105 : x
  2. Step 2: Convert to fraction form
    56,257.12/77,631.78 = 31,105/x
  3. Step 3: Cross multiply
    56,257.12x = 77,631.78 × 31,105
  4. Step 4: Simplify right side
    56,257.12x = 2,414,736,516.90
  5. Step 5: Solve for x
    x = 2,414,736,516.90/56,257.12
  6. Step 6: Final answer
    x = 42,923.22

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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.