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Finding the Fourth Proportional to 30,367,480.80, 45,515,791.80 and 12,162,674.10

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Solution

The fourth proportional to 30,367,480.80, 45,515,791.80 and 12,162,674.10 is: 18,229,821.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,367,480.80 : 45,515,791.80 = 12,162,674.10 : x
  2. Step 2: Convert to fraction form
    30,367,480.80/45,515,791.80 = 12,162,674.10/x
  3. Step 3: Cross multiply
    30,367,480.80x = 45,515,791.80 × 12,162,674.10
  4. Step 4: Simplify right side
    30,367,480.80x = 553,593,742,066,852.31
  5. Step 5: Solve for x
    x = 553,593,742,066,852.31/30,367,480.80
  6. Step 6: Final answer
    x = 18,229,821.09

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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.