Home / 85,939.96-128,879.04-29,764.94

Finding the Fourth Proportional to 85,939.96, 128,879.04 and 29,764.94

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Solution

The fourth proportional to 85,939.96, 128,879.04 and 29,764.94 is: 44,636.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,939.96 : 128,879.04 = 29,764.94 : x
  2. Step 2: Convert to fraction form
    85,939.96/128,879.04 = 29,764.94/x
  3. Step 3: Cross multiply
    85,939.96x = 128,879.04 × 29,764.94
  4. Step 4: Simplify right side
    85,939.96x = 3,836,076,892.86
  5. Step 5: Solve for x
    x = 3,836,076,892.86/85,939.96
  6. Step 6: Final answer
    x = 44,636.71

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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.