Home / 85,029,079.70-127,543,619.55-68,022,967.70

Finding the Fourth Proportional to 85,029,079.70, 127,543,619.55 and 68,022,967.70

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Solution

The fourth proportional to 85,029,079.70, 127,543,619.55 and 68,022,967.70 is: 102,034,451.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,029,079.70 : 127,543,619.55 = 68,022,967.70 : x
  2. Step 2: Convert to fraction form
    85,029,079.70/127,543,619.55 = 68,022,967.70/x
  3. Step 3: Cross multiply
    85,029,079.70x = 127,543,619.55 × 68,022,967.70
  4. Step 4: Simplify right side
    85,029,079.70x = 8,675,895,512,990,739
  5. Step 5: Solve for x
    x = 8,675,895,512,990,739/85,029,079.70
  6. Step 6: Final answer
    x = 102,034,451.55

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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.