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Finding the Fourth Proportional to 87,358.56, 120,554.91 and 49,640.10

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Solution

The fourth proportional to 87,358.56, 120,554.91 and 49,640.10 is: 68,503.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,358.56 : 120,554.91 = 49,640.10 : x
  2. Step 2: Convert to fraction form
    87,358.56/120,554.91 = 49,640.10/x
  3. Step 3: Cross multiply
    87,358.56x = 120,554.91 × 49,640.10
  4. Step 4: Simplify right side
    87,358.56x = 5,984,357,787.89
  5. Step 5: Solve for x
    x = 5,984,357,787.89/87,358.56
  6. Step 6: Final answer
    x = 68,503.39

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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.