Home / 87,692.48-121,037.56-49,988.64

Finding the Fourth Proportional to 87,692.48, 121,037.56 and 49,988.64

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Solution

The fourth proportional to 87,692.48, 121,037.56 and 49,988.64 is: 68,996.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,692.48 : 121,037.56 = 49,988.64 : x
  2. Step 2: Convert to fraction form
    87,692.48/121,037.56 = 49,988.64/x
  3. Step 3: Cross multiply
    87,692.48x = 121,037.56 × 49,988.64
  4. Step 4: Simplify right side
    87,692.48x = 6,050,503,013.32
  5. Step 5: Solve for x
    x = 6,050,503,013.32/87,692.48
  6. Step 6: Final answer
    x = 68,996.83

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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.