Home / 85,571.38-128,231.76-48,204.28

Finding the Fourth Proportional to 85,571.38, 128,231.76 and 48,204.28

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Solution

The fourth proportional to 85,571.38, 128,231.76 and 48,204.28 is: 72,235.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,571.38 : 128,231.76 = 48,204.28 : x
  2. Step 2: Convert to fraction form
    85,571.38/128,231.76 = 48,204.28/x
  3. Step 3: Cross multiply
    85,571.38x = 128,231.76 × 48,204.28
  4. Step 4: Simplify right side
    85,571.38x = 6,181,319,663.93
  5. Step 5: Solve for x
    x = 6,181,319,663.93/85,571.38
  6. Step 6: Final answer
    x = 72,235.83

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1.5x scale

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.