Home / 87,936.84-121,367.16-65,425.32

Finding the Fourth Proportional to 87,936.84, 121,367.16 and 65,425.32

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Solution

The fourth proportional to 87,936.84, 121,367.16 and 65,425.32 is: 90,297.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,936.84 : 121,367.16 = 65,425.32 : x
  2. Step 2: Convert to fraction form
    87,936.84/121,367.16 = 65,425.32/x
  3. Step 3: Cross multiply
    87,936.84x = 121,367.16 × 65,425.32
  4. Step 4: Simplify right side
    87,936.84x = 7,940,485,280.49
  5. Step 5: Solve for x
    x = 7,940,485,280.49/87,936.84
  6. Step 6: Final answer
    x = 90,297.60

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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.