Home / 87,443.39-120,692.05-51,161.72

Finding the Fourth Proportional to 87,443.39, 120,692.05 and 51,161.72

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Solution

The fourth proportional to 87,443.39, 120,692.05 and 51,161.72 is: 70,614.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,443.39 : 120,692.05 = 51,161.72 : x
  2. Step 2: Convert to fraction form
    87,443.39/120,692.05 = 51,161.72/x
  3. Step 3: Cross multiply
    87,443.39x = 120,692.05 × 51,161.72
  4. Step 4: Simplify right side
    87,443.39x = 6,174,812,868.33
  5. Step 5: Solve for x
    x = 6,174,812,868.33/87,443.39
  6. Step 6: Final answer
    x = 70,614.98

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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.