Home / 85,390.13-127,997.70-35,499.20

Finding the Fourth Proportional to 85,390.13, 127,997.70 and 35,499.20

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Solution

The fourth proportional to 85,390.13, 127,997.70 and 35,499.20 is: 53,212.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,390.13 : 127,997.70 = 35,499.20 : x
  2. Step 2: Convert to fraction form
    85,390.13/127,997.70 = 35,499.20/x
  3. Step 3: Cross multiply
    85,390.13x = 127,997.70 × 35,499.20
  4. Step 4: Simplify right side
    85,390.13x = 4,543,815,951.84
  5. Step 5: Solve for x
    x = 4,543,815,951.84/85,390.13
  6. Step 6: Final answer
    x = 53,212.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.