Home / 31,521,666.20-47,282,499.30-20,751,128.60

Finding the Fourth Proportional to 31,521,666.20, 47,282,499.30 and 20,751,128.60

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Solution

The fourth proportional to 31,521,666.20, 47,282,499.30 and 20,751,128.60 is: 31,126,692.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,521,666.20 : 47,282,499.30 = 20,751,128.60 : x
  2. Step 2: Convert to fraction form
    31,521,666.20/47,282,499.30 = 20,751,128.60/x
  3. Step 3: Cross multiply
    31,521,666.20x = 47,282,499.30 × 20,751,128.60
  4. Step 4: Simplify right side
    31,521,666.20x = 981,165,223,503,710
  5. Step 5: Solve for x
    x = 981,165,223,503,710/31,521,666.20
  6. Step 6: Final answer
    x = 31,126,692.90

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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.