Home / 20,120,789.80-30,178,851.90-5,746,076.20

Finding the Fourth Proportional to 20,120,789.80, 30,178,851.90 and 5,746,076.20

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Solution

The fourth proportional to 20,120,789.80, 30,178,851.90 and 5,746,076.20 is: 8,618,448.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120,789.80 : 30,178,851.90 = 5,746,076.20 : x
  2. Step 2: Convert to fraction form
    20,120,789.80/30,178,851.90 = 5,746,076.20/x
  3. Step 3: Cross multiply
    20,120,789.80x = 30,178,851.90 × 5,746,076.20
  4. Step 4: Simplify right side
    20,120,789.80x = 173,409,982,645,914.78
  5. Step 5: Solve for x
    x = 173,409,982,645,914.78/20,120,789.80
  6. Step 6: Final answer
    x = 8,618,448.10

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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.