Home / 30,329,789.40-45,494,684.10-20,126,122.20

Finding the Fourth Proportional to 30,329,789.40, 45,494,684.10 and 20,126,122.20

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Solution

The fourth proportional to 30,329,789.40, 45,494,684.10 and 20,126,122.20 is: 30,189,183.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,329,789.40 : 45,494,684.10 = 20,126,122.20 : x
  2. Step 2: Convert to fraction form
    30,329,789.40/45,494,684.10 = 20,126,122.20/x
  3. Step 3: Cross multiply
    30,329,789.40x = 45,494,684.10 × 20,126,122.20
  4. Step 4: Simplify right side
    30,329,789.40x = 915,631,571,646,997
  5. Step 5: Solve for x
    x = 915,631,571,646,997/30,329,789.40
  6. Step 6: Final answer
    x = 30,189,183.30

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Similar ratio
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1.5x scale

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.