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Finding the Fourth Proportional to 91,622.85, 137,276.46 and 71,624.58

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Solution

The fourth proportional to 91,622.85, 137,276.46 and 71,624.58 is: 107,313.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,622.85 : 137,276.46 = 71,624.58 : x
  2. Step 2: Convert to fraction form
    91,622.85/137,276.46 = 71,624.58/x
  3. Step 3: Cross multiply
    91,622.85x = 137,276.46 × 71,624.58
  4. Step 4: Simplify right side
    91,622.85x = 9,832,368,791.39
  5. Step 5: Solve for x
    x = 9,832,368,791.39/91,622.85
  6. Step 6: Final answer
    x = 107,313.50

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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.