Home / 55,610.20-83,415.30-31,990.60

Finding the Fourth Proportional to 55,610.20, 83,415.30 and 31,990.60

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Solution

The fourth proportional to 55,610.20, 83,415.30 and 31,990.60 is: 47,985.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,610.20 : 83,415.30 = 31,990.60 : x
  2. Step 2: Convert to fraction form
    55,610.20/83,415.30 = 31,990.60/x
  3. Step 3: Cross multiply
    55,610.20x = 83,415.30 × 31,990.60
  4. Step 4: Simplify right side
    55,610.20x = 2,668,505,496.18
  5. Step 5: Solve for x
    x = 2,668,505,496.18/55,610.20
  6. Step 6: Final answer
    x = 47,985.90

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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.