Home / 85,664.45-128,422.87-33,110.84

Finding the Fourth Proportional to 85,664.45, 128,422.87 and 33,110.84

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Solution

The fourth proportional to 85,664.45, 128,422.87 and 33,110.84 is: 49,637.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,664.45 : 128,422.87 = 33,110.84 : x
  2. Step 2: Convert to fraction form
    85,664.45/128,422.87 = 33,110.84/x
  3. Step 3: Cross multiply
    85,664.45x = 128,422.87 × 33,110.84
  4. Step 4: Simplify right side
    85,664.45x = 4,252,189,339.19
  5. Step 5: Solve for x
    x = 4,252,189,339.19/85,664.45
  6. Step 6: Final answer
    x = 49,637.73

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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.