Home / 51,977.28-77,961.60-20,814.24

Finding the Fourth Proportional to 51,977.28, 77,961.60 and 20,814.24

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Solution

The fourth proportional to 51,977.28, 77,961.60 and 20,814.24 is: 31,219.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,977.28 : 77,961.60 = 20,814.24 : x
  2. Step 2: Convert to fraction form
    51,977.28/77,961.60 = 20,814.24/x
  3. Step 3: Cross multiply
    51,977.28x = 77,961.60 × 20,814.24
  4. Step 4: Simplify right side
    51,977.28x = 1,622,711,453.18
  5. Step 5: Solve for x
    x = 1,622,711,453.18/51,977.28
  6. Step 6: Final answer
    x = 31,219.63

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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.