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Finding the Fourth Proportional to 60,813, 91,144.62 and 43,187.40

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Solution

The fourth proportional to 60,813, 91,144.62 and 43,187.40 is: 64,727.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,813 : 91,144.62 = 43,187.40 : x
  2. Step 2: Convert to fraction form
    60,813/91,144.62 = 43,187.40/x
  3. Step 3: Cross multiply
    60,813x = 91,144.62 × 43,187.40
  4. Step 4: Simplify right side
    60,813x = 3,936,299,161.79
  5. Step 5: Solve for x
    x = 3,936,299,161.79/60,813
  6. Step 6: Final answer
    x = 64,727.92

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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.