Home / 87,406.52-120,620.74-49,688.04

Finding the Fourth Proportional to 87,406.52, 120,620.74 and 49,688.04

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Solution

The fourth proportional to 87,406.52, 120,620.74 and 49,688.04 is: 68,569.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,406.52 : 120,620.74 = 49,688.04 : x
  2. Step 2: Convert to fraction form
    87,406.52/120,620.74 = 49,688.04/x
  3. Step 3: Cross multiply
    87,406.52x = 120,620.74 × 49,688.04
  4. Step 4: Simplify right side
    87,406.52x = 5,993,408,153.95
  5. Step 5: Solve for x
    x = 5,993,408,153.95/87,406.52
  6. Step 6: Final answer
    x = 68,569.35

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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.