Home / 48,216.78-72,336.72-20,121.21

Finding the Fourth Proportional to 48,216.78, 72,336.72 and 20,121.21

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Solution

The fourth proportional to 48,216.78, 72,336.72 and 20,121.21 is: 30,186.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,216.78 : 72,336.72 = 20,121.21 : x
  2. Step 2: Convert to fraction form
    48,216.78/72,336.72 = 20,121.21/x
  3. Step 3: Cross multiply
    48,216.78x = 72,336.72 × 20,121.21
  4. Step 4: Simplify right side
    48,216.78x = 1,455,501,871.54
  5. Step 5: Solve for x
    x = 1,455,501,871.54/48,216.78
  6. Step 6: Final answer
    x = 30,186.63

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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.