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Finding the Fourth Proportional to 91,145.20, 136,620.60 and 34,963.60

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Solution

The fourth proportional to 91,145.20, 136,620.60 and 34,963.60 is: 52,408.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,145.20 : 136,620.60 = 34,963.60 : x
  2. Step 2: Convert to fraction form
    91,145.20/136,620.60 = 34,963.60/x
  3. Step 3: Cross multiply
    91,145.20x = 136,620.60 × 34,963.60
  4. Step 4: Simplify right side
    91,145.20x = 4,776,748,010.16
  5. Step 5: Solve for x
    x = 4,776,748,010.16/91,145.20
  6. Step 6: Final answer
    x = 52,408.11

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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.