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Finding the Fourth Proportional to 88,121.36, 121,608.36 and 47,835.44

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Solution

The fourth proportional to 88,121.36, 121,608.36 and 47,835.44 is: 66,013.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,121.36 : 121,608.36 = 47,835.44 : x
  2. Step 2: Convert to fraction form
    88,121.36/121,608.36 = 47,835.44/x
  3. Step 3: Cross multiply
    88,121.36x = 121,608.36 × 47,835.44
  4. Step 4: Simplify right side
    88,121.36x = 5,817,189,408.28
  5. Step 5: Solve for x
    x = 5,817,189,408.28/88,121.36
  6. Step 6: Final answer
    x = 66,013.39

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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.