Home / 85,954,408.56-128,850,562.53-42,782,798.97

Finding the Fourth Proportional to 85,954,408.56, 128,850,562.53 and 42,782,798.97

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Solution

The fourth proportional to 85,954,408.56, 128,850,562.53 and 42,782,798.97 is: 64,133,856.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,954,408.56 : 128,850,562.53 = 42,782,798.97 : x
  2. Step 2: Convert to fraction form
    85,954,408.56/128,850,562.53 = 42,782,798.97/x
  3. Step 3: Cross multiply
    85,954,408.56x = 128,850,562.53 × 42,782,798.97
  4. Step 4: Simplify right side
    85,954,408.56x = 5,512,587,713,892,404
  5. Step 5: Solve for x
    x = 5,512,587,713,892,404/85,954,408.56
  6. Step 6: Final answer
    x = 64,133,856.61

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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.