Home / 56,471.20-77,930.39-30,977.80

Finding the Fourth Proportional to 56,471.20, 77,930.39 and 30,977.80

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Solution

The fourth proportional to 56,471.20, 77,930.39 and 30,977.80 is: 42,749.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,471.20 : 77,930.39 = 30,977.80 : x
  2. Step 2: Convert to fraction form
    56,471.20/77,930.39 = 30,977.80/x
  3. Step 3: Cross multiply
    56,471.20x = 77,930.39 × 30,977.80
  4. Step 4: Simplify right side
    56,471.20x = 2,414,112,035.34
  5. Step 5: Solve for x
    x = 2,414,112,035.34/56,471.20
  6. Step 6: Final answer
    x = 42,749.44

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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.