Home / 56,661.85-78,190.27-31,163.32

Finding the Fourth Proportional to 56,661.85, 78,190.27 and 31,163.32

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Solution

The fourth proportional to 56,661.85, 78,190.27 and 31,163.32 is: 43,003.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,661.85 : 78,190.27 = 31,163.32 : x
  2. Step 2: Convert to fraction form
    56,661.85/78,190.27 = 31,163.32/x
  3. Step 3: Cross multiply
    56,661.85x = 78,190.27 × 31,163.32
  4. Step 4: Simplify right side
    56,661.85x = 2,436,668,404.90
  5. Step 5: Solve for x
    x = 2,436,668,404.90/56,661.85
  6. Step 6: Final answer
    x = 43,003.69

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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.