Home / 20,125,972.90-30,188,959.35-4,979,904.40

Finding the Fourth Proportional to 20,125,972.90, 30,188,959.35 and 4,979,904.40

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Solution

The fourth proportional to 20,125,972.90, 30,188,959.35 and 4,979,904.40 is: 7,469,856.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,125,972.90 : 30,188,959.35 = 4,979,904.40 : x
  2. Step 2: Convert to fraction form
    20,125,972.90/30,188,959.35 = 4,979,904.40/x
  3. Step 3: Cross multiply
    20,125,972.90x = 30,188,959.35 × 4,979,904.40
  4. Step 4: Simplify right side
    20,125,972.90x = 150,338,131,498,486.16
  5. Step 5: Solve for x
    x = 150,338,131,498,486.16/20,125,972.90
  6. Step 6: Final answer
    x = 7,469,856.60

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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.