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Finding the Fourth Proportional to 91,370.90, 137,039.58 and 41,439

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Solution

The fourth proportional to 91,370.90, 137,039.58 and 41,439 is: 62,150.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,370.90 : 137,039.58 = 41,439 : x
  2. Step 2: Convert to fraction form
    91,370.90/137,039.58 = 41,439/x
  3. Step 3: Cross multiply
    91,370.90x = 137,039.58 × 41,439
  4. Step 4: Simplify right side
    91,370.90x = 5,678,783,155.62
  5. Step 5: Solve for x
    x = 5,678,783,155.62/91,370.90
  6. Step 6: Final answer
    x = 62,150.89

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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.