Home / 55,529.78-83,161.20-31,765.28

Finding the Fourth Proportional to 55,529.78, 83,161.20 and 31,765.28

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Solution

The fourth proportional to 55,529.78, 83,161.20 and 31,765.28 is: 47,571.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,529.78 : 83,161.20 = 31,765.28 : x
  2. Step 2: Convert to fraction form
    55,529.78/83,161.20 = 31,765.28/x
  3. Step 3: Cross multiply
    55,529.78x = 83,161.20 × 31,765.28
  4. Step 4: Simplify right side
    55,529.78x = 2,641,638,803.14
  5. Step 5: Solve for x
    x = 2,641,638,803.14/55,529.78
  6. Step 6: Final answer
    x = 47,571.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.