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Finding the Fourth Proportional to 85,571.68, 118,099.92 and 47,848

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Solution

The fourth proportional to 85,571.68, 118,099.92 and 47,848 is: 66,036.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,571.68 : 118,099.92 = 47,848 : x
  2. Step 2: Convert to fraction form
    85,571.68/118,099.92 = 47,848/x
  3. Step 3: Cross multiply
    85,571.68x = 118,099.92 × 47,848
  4. Step 4: Simplify right side
    85,571.68x = 5,650,844,972.16
  5. Step 5: Solve for x
    x = 5,650,844,972.16/85,571.68
  6. Step 6: Final answer
    x = 66,036.39

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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.