Home / 50,490.20-75,687-18,891.68

Finding the Fourth Proportional to 50,490.20, 75,687 and 18,891.68

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Solution

The fourth proportional to 50,490.20, 75,687 and 18,891.68 is: 28,319.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,490.20 : 75,687 = 18,891.68 : x
  2. Step 2: Convert to fraction form
    50,490.20/75,687 = 18,891.68/x
  3. Step 3: Cross multiply
    50,490.20x = 75,687 × 18,891.68
  4. Step 4: Simplify right side
    50,490.20x = 1,429,854,584.16
  5. Step 5: Solve for x
    x = 1,429,854,584.16/50,490.20
  6. Step 6: Final answer
    x = 28,319.45

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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.