Home / 80,079,512.72-120,128,716.96-60,012,300.56

Finding the Fourth Proportional to 80,079,512.72, 120,128,716.96 and 60,012,300.56

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Solution

The fourth proportional to 80,079,512.72, 120,128,716.96 and 60,012,300.56 is: 90,025,531.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,079,512.72 : 120,128,716.96 = 60,012,300.56 : x
  2. Step 2: Convert to fraction form
    80,079,512.72/120,128,716.96 = 60,012,300.56/x
  3. Step 3: Cross multiply
    80,079,512.72x = 120,128,716.96 × 60,012,300.56
  4. Step 4: Simplify right side
    80,079,512.72x = 7,209,200,668,090,689
  5. Step 5: Solve for x
    x = 7,209,200,668,090,689/80,079,512.72
  6. Step 6: Final answer
    x = 90,025,531.17

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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.