Home / 20,129,148,003.70-30,193,722,005.55-6,879,367,279.90

Finding the Fourth Proportional to 20,129,148,003.70, 30,193,722,005.55 and 6,879,367,279.90

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Solution

The fourth proportional to 20,129,148,003.70, 30,193,722,005.55 and 6,879,367,279.90 is: 10,319,050,919.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,129,148,003.70 : 30,193,722,005.55 = 6,879,367,279.90 : x
  2. Step 2: Convert to fraction form
    20,129,148,003.70/30,193,722,005.55 = 6,879,367,279.90/x
  3. Step 3: Cross multiply
    20,129,148,003.70x = 30,193,722,005.55 × 6,879,367,279.90
  4. Step 4: Simplify right side
    20,129,148,003.70x = 207,713,703,223,377,264,640
  5. Step 5: Solve for x
    x = 207,713,703,223,377,264,640/20,129,148,003.70
  6. Step 6: Final answer
    x = 10,319,050,919.85

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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.