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Finding the Fourth Proportional to 87,374.92, 120,548.39 and 71,214.48

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Solution

The fourth proportional to 87,374.92, 120,548.39 and 71,214.48 is: 98,252.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,374.92 : 120,548.39 = 71,214.48 : x
  2. Step 2: Convert to fraction form
    87,374.92/120,548.39 = 71,214.48/x
  3. Step 3: Cross multiply
    87,374.92x = 120,548.39 × 71,214.48
  4. Step 4: Simplify right side
    87,374.92x = 8,584,790,908.69
  5. Step 5: Solve for x
    x = 8,584,790,908.69/87,374.92
  6. Step 6: Final answer
    x = 98,252.35

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1.5x scale

Why These Related Problems?

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