Home / 80,771.94-121,079.16-38,641.02

Finding the Fourth Proportional to 80,771.94, 121,079.16 and 38,641.02

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Solution

The fourth proportional to 80,771.94, 121,079.16 and 38,641.02 is: 57,923.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,771.94 : 121,079.16 = 38,641.02 : x
  2. Step 2: Convert to fraction form
    80,771.94/121,079.16 = 38,641.02/x
  3. Step 3: Cross multiply
    80,771.94x = 121,079.16 × 38,641.02
  4. Step 4: Simplify right side
    80,771.94x = 4,678,622,243.14
  5. Step 5: Solve for x
    x = 4,678,622,243.14/80,771.94
  6. Step 6: Final answer
    x = 57,923.86

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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.