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Finding the Fourth Proportional to 85,233.78, 127,908.99 and 43,709.94

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Solution

The fourth proportional to 85,233.78, 127,908.99 and 43,709.94 is: 65,594.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,233.78 : 127,908.99 = 43,709.94 : x
  2. Step 2: Convert to fraction form
    85,233.78/127,908.99 = 43,709.94/x
  3. Step 3: Cross multiply
    85,233.78x = 127,908.99 × 43,709.94
  4. Step 4: Simplify right side
    85,233.78x = 5,590,894,278.36
  5. Step 5: Solve for x
    x = 5,590,894,278.36/85,233.78
  6. Step 6: Final answer
    x = 65,594.82

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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.