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Finding the Fourth Proportional to 91,370.57, 137,019.53 and 35,179.54

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Solution

The fourth proportional to 91,370.57, 137,019.53 and 35,179.54 is: 52,755.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,370.57 : 137,019.53 = 35,179.54 : x
  2. Step 2: Convert to fraction form
    91,370.57/137,019.53 = 35,179.54/x
  3. Step 3: Cross multiply
    91,370.57x = 137,019.53 × 35,179.54
  4. Step 4: Simplify right side
    91,370.57x = 4,820,283,781.82
  5. Step 5: Solve for x
    x = 4,820,283,781.82/91,370.57
  6. Step 6: Final answer
    x = 52,755.32

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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.