Home / 87,899.87-121,294.61-49,662.72

Finding the Fourth Proportional to 87,899.87, 121,294.61 and 49,662.72

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Solution

The fourth proportional to 87,899.87, 121,294.61 and 49,662.72 is: 68,530.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,899.87 : 121,294.61 = 49,662.72 : x
  2. Step 2: Convert to fraction form
    87,899.87/121,294.61 = 49,662.72/x
  3. Step 3: Cross multiply
    87,899.87x = 121,294.61 × 49,662.72
  4. Step 4: Simplify right side
    87,899.87x = 6,023,820,005.63
  5. Step 5: Solve for x
    x = 6,023,820,005.63/87,899.87
  6. Step 6: Final answer
    x = 68,530.48

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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.