Home / 55,321.45-76,343.85-31,453.11

Finding the Fourth Proportional to 55,321.45, 76,343.85 and 31,453.11

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Solution

The fourth proportional to 55,321.45, 76,343.85 and 31,453.11 is: 43,405.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,321.45 : 76,343.85 = 31,453.11 : x
  2. Step 2: Convert to fraction form
    55,321.45/76,343.85 = 31,453.11/x
  3. Step 3: Cross multiply
    55,321.45x = 76,343.85 × 31,453.11
  4. Step 4: Simplify right side
    55,321.45x = 2,401,251,511.87
  5. Step 5: Solve for x
    x = 2,401,251,511.87/55,321.45
  6. Step 6: Final answer
    x = 43,405.44

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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.