Home / 87,091.08-120,196.74-51,284.40

Finding the Fourth Proportional to 87,091.08, 120,196.74 and 51,284.40

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Solution

The fourth proportional to 87,091.08, 120,196.74 and 51,284.40 is: 70,778.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,091.08 : 120,196.74 = 51,284.40 : x
  2. Step 2: Convert to fraction form
    87,091.08/120,196.74 = 51,284.40/x
  3. Step 3: Cross multiply
    87,091.08x = 120,196.74 × 51,284.40
  4. Step 4: Simplify right side
    87,091.08x = 6,164,217,692.86
  5. Step 5: Solve for x
    x = 6,164,217,692.86/87,091.08
  6. Step 6: Final answer
    x = 70,778.98

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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.