Home / 30,121.20-45,181.80-22,345.20

Finding the Fourth Proportional to 30,121.20, 45,181.80 and 22,345.20

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Solution

The fourth proportional to 30,121.20, 45,181.80 and 22,345.20 is: 33,517.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,121.20 : 45,181.80 = 22,345.20 : x
  2. Step 2: Convert to fraction form
    30,121.20/45,181.80 = 22,345.20/x
  3. Step 3: Cross multiply
    30,121.20x = 45,181.80 × 22,345.20
  4. Step 4: Simplify right side
    30,121.20x = 1,009,596,357.36
  5. Step 5: Solve for x
    x = 1,009,596,357.36/30,121.20
  6. Step 6: Final answer
    x = 33,517.80

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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.