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Finding the Fourth Proportional to 87,813.72, 121,161.42 and 52,002

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Solution

The fourth proportional to 87,813.72, 121,161.42 and 52,002 is: 71,750.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,813.72 : 121,161.42 = 52,002 : x
  2. Step 2: Convert to fraction form
    87,813.72/121,161.42 = 52,002/x
  3. Step 3: Cross multiply
    87,813.72x = 121,161.42 × 52,002
  4. Step 4: Simplify right side
    87,813.72x = 6,300,636,162.84
  5. Step 5: Solve for x
    x = 6,300,636,162.84/87,813.72
  6. Step 6: Final answer
    x = 71,750.02

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.