Home / 56,458.80-84,634.20-20,910.60

Finding the Fourth Proportional to 56,458.80, 84,634.20 and 20,910.60

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Solution

The fourth proportional to 56,458.80, 84,634.20 and 20,910.60 is: 31,345.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,458.80 : 84,634.20 = 20,910.60 : x
  2. Step 2: Convert to fraction form
    56,458.80/84,634.20 = 20,910.60/x
  3. Step 3: Cross multiply
    56,458.80x = 84,634.20 × 20,910.60
  4. Step 4: Simplify right side
    56,458.80x = 1,769,751,902.52
  5. Step 5: Solve for x
    x = 1,769,751,902.52/56,458.80
  6. Step 6: Final answer
    x = 31,345.90

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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.