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Finding the Fourth Proportional to 91,139.50, 136,770 and 35,025.94

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Solution

The fourth proportional to 91,139.50, 136,770 and 35,025.94 is: 52,562.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,139.50 : 136,770 = 35,025.94 : x
  2. Step 2: Convert to fraction form
    91,139.50/136,770 = 35,025.94/x
  3. Step 3: Cross multiply
    91,139.50x = 136,770 × 35,025.94
  4. Step 4: Simplify right side
    91,139.50x = 4,790,497,813.80
  5. Step 5: Solve for x
    x = 4,790,497,813.80/91,139.50
  6. Step 6: Final answer
    x = 52,562.26

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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.