Home / 85,343.20-127,911.12-60,390.54

Finding the Fourth Proportional to 85,343.20, 127,911.12 and 60,390.54

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Solution

The fourth proportional to 85,343.20, 127,911.12 and 60,390.54 is: 90,512.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,343.20 : 127,911.12 = 60,390.54 : x
  2. Step 2: Convert to fraction form
    85,343.20/127,911.12 = 60,390.54/x
  3. Step 3: Cross multiply
    85,343.20x = 127,911.12 × 60,390.54
  4. Step 4: Simplify right side
    85,343.20x = 7,724,621,608.80
  5. Step 5: Solve for x
    x = 7,724,621,608.80/85,343.20
  6. Step 6: Final answer
    x = 90,512.44

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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.