Home / 87,319.12-120,503.28-49,085.32

Finding the Fourth Proportional to 87,319.12, 120,503.28 and 49,085.32

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Solution

The fourth proportional to 87,319.12, 120,503.28 and 49,085.32 is: 67,739.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,319.12 : 120,503.28 = 49,085.32 : x
  2. Step 2: Convert to fraction form
    87,319.12/120,503.28 = 49,085.32/x
  3. Step 3: Cross multiply
    87,319.12x = 120,503.28 × 49,085.32
  4. Step 4: Simplify right side
    87,319.12x = 5,914,942,059.85
  5. Step 5: Solve for x
    x = 5,914,942,059.85/87,319.12
  6. Step 6: Final answer
    x = 67,739.37

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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.