Home / 80,079,505.85-120,128,706.62-60,012,293.69

Finding the Fourth Proportional to 80,079,505.85, 120,128,706.62 and 60,012,293.69

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Solution

The fourth proportional to 80,079,505.85, 120,128,706.62 and 60,012,293.69 is: 90,025,520.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,079,505.85 : 120,128,706.62 = 60,012,293.69 : x
  2. Step 2: Convert to fraction form
    80,079,505.85/120,128,706.62 = 60,012,293.69/x
  3. Step 3: Cross multiply
    80,079,505.85x = 120,128,706.62 × 60,012,293.69
  4. Step 4: Simplify right side
    80,079,505.85x = 7,209,199,221,378,582
  5. Step 5: Solve for x
    x = 7,209,199,221,378,582/80,079,505.85
  6. Step 6: Final answer
    x = 90,025,520.83

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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.