Home / 42,520.80-63,782.25-20,336.52

Finding the Fourth Proportional to 42,520.80, 63,782.25 and 20,336.52

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Solution

The fourth proportional to 42,520.80, 63,782.25 and 20,336.52 is: 30,505.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,520.80 : 63,782.25 = 20,336.52 : x
  2. Step 2: Convert to fraction form
    42,520.80/63,782.25 = 20,336.52/x
  3. Step 3: Cross multiply
    42,520.80x = 63,782.25 × 20,336.52
  4. Step 4: Simplify right side
    42,520.80x = 1,297,109,002.77
  5. Step 5: Solve for x
    x = 1,297,109,002.77/42,520.80
  6. Step 6: Final answer
    x = 30,505.28

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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.