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Finding the Fourth Proportional to 85,571.56, 128,354.10 and 23,243.68

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Solution

The fourth proportional to 85,571.56, 128,354.10 and 23,243.68 is: 34,864.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,571.56 : 128,354.10 = 23,243.68 : x
  2. Step 2: Convert to fraction form
    85,571.56/128,354.10 = 23,243.68/x
  3. Step 3: Cross multiply
    85,571.56x = 128,354.10 × 23,243.68
  4. Step 4: Simplify right side
    85,571.56x = 2,983,421,627.09
  5. Step 5: Solve for x
    x = 2,983,421,627.09/85,571.56
  6. Step 6: Final answer
    x = 34,864.64

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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.