Home / 90,786,960-125,324,662.94-61,034,863.20

Finding the Fourth Proportional to 90,786,960, 125,324,662.94 and 61,034,863.20

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Solution

The fourth proportional to 90,786,960, 125,324,662.94 and 61,034,863.20 is: 84,254,100.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,786,960 : 125,324,662.94 = 61,034,863.20 : x
  2. Step 2: Convert to fraction form
    90,786,960/125,324,662.94 = 61,034,863.20/x
  3. Step 3: Cross multiply
    90,786,960x = 125,324,662.94 × 61,034,863.20
  4. Step 4: Simplify right side
    90,786,960x = 7,649,173,658,129,010
  5. Step 5: Solve for x
    x = 7,649,173,658,129,010/90,786,960
  6. Step 6: Final answer
    x = 84,254,100.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.