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Finding the Fourth Proportional to 89,102.96, 122,681.56 and 75,647.60

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Solution

The fourth proportional to 89,102.96, 122,681.56 and 75,647.60 is: 104,155.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,102.96 : 122,681.56 = 75,647.60 : x
  2. Step 2: Convert to fraction form
    89,102.96/122,681.56 = 75,647.60/x
  3. Step 3: Cross multiply
    89,102.96x = 122,681.56 × 75,647.60
  4. Step 4: Simplify right side
    89,102.96x = 9,280,565,578.26
  5. Step 5: Solve for x
    x = 9,280,565,578.26/89,102.96
  6. Step 6: Final answer
    x = 104,155.53

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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.