Home / 42,425.36-63,651.87-20,235.85

Finding the Fourth Proportional to 42,425.36, 63,651.87 and 20,235.85

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Solution

The fourth proportional to 42,425.36, 63,651.87 and 20,235.85 is: 30,360.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,425.36 : 63,651.87 = 20,235.85 : x
  2. Step 2: Convert to fraction form
    42,425.36/63,651.87 = 20,235.85/x
  3. Step 3: Cross multiply
    42,425.36x = 63,651.87 × 20,235.85
  4. Step 4: Simplify right side
    42,425.36x = 1,288,049,892.45
  5. Step 5: Solve for x
    x = 1,288,049,892.45/42,425.36
  6. Step 6: Final answer
    x = 30,360.37

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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.