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Finding the Fourth Proportional to 91,280.96, 136,930.08 and 35,864

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Solution

The fourth proportional to 91,280.96, 136,930.08 and 35,864 is: 53,799.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,280.96 : 136,930.08 = 35,864 : x
  2. Step 2: Convert to fraction form
    91,280.96/136,930.08 = 35,864/x
  3. Step 3: Cross multiply
    91,280.96x = 136,930.08 × 35,864
  4. Step 4: Simplify right side
    91,280.96x = 4,910,860,389.12
  5. Step 5: Solve for x
    x = 4,910,860,389.12/91,280.96
  6. Step 6: Final answer
    x = 53,799.39

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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.