Home / 30,612,100.68-45,923,801.60-12,662,604.36

Finding the Fourth Proportional to 30,612,100.68, 45,923,801.60 and 12,662,604.36

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Solution

The fourth proportional to 30,612,100.68, 45,923,801.60 and 12,662,604.36 is: 18,996,243.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,612,100.68 : 45,923,801.60 = 12,662,604.36 : x
  2. Step 2: Convert to fraction form
    30,612,100.68/45,923,801.60 = 12,662,604.36/x
  3. Step 3: Cross multiply
    30,612,100.68x = 45,923,801.60 × 12,662,604.36
  4. Step 4: Simplify right side
    30,612,100.68x = 581,514,930,367,935
  5. Step 5: Solve for x
    x = 581,514,930,367,935/30,612,100.68
  6. Step 6: Final answer
    x = 18,996,243.89

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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.