Home / 87,756.03-121,102.57-49,515.87

Finding the Fourth Proportional to 87,756.03, 121,102.57 and 49,515.87

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Solution

The fourth proportional to 87,756.03, 121,102.57 and 49,515.87 is: 68,331.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,756.03 : 121,102.57 = 49,515.87 : x
  2. Step 2: Convert to fraction form
    87,756.03/121,102.57 = 49,515.87/x
  3. Step 3: Cross multiply
    87,756.03x = 121,102.57 × 49,515.87
  4. Step 4: Simplify right side
    87,756.03x = 5,996,498,720.55
  5. Step 5: Solve for x
    x = 5,996,498,720.55/87,756.03
  6. Step 6: Final answer
    x = 68,331.47

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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.