Home / 52,449.74-78,618.60-20,816

Finding the Fourth Proportional to 52,449.74, 78,618.60 and 20,816

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Solution

The fourth proportional to 52,449.74, 78,618.60 and 20,816 is: 31,201.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,449.74 : 78,618.60 = 20,816 : x
  2. Step 2: Convert to fraction form
    52,449.74/78,618.60 = 20,816/x
  3. Step 3: Cross multiply
    52,449.74x = 78,618.60 × 20,816
  4. Step 4: Simplify right side
    52,449.74x = 1,636,524,777.60
  5. Step 5: Solve for x
    x = 1,636,524,777.60/52,449.74
  6. Step 6: Final answer
    x = 31,201.77

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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.