Home / 80,864.20-121,004.70-54,620.20

Finding the Fourth Proportional to 80,864.20, 121,004.70 and 54,620.20

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Solution

The fourth proportional to 80,864.20, 121,004.70 and 54,620.20 is: 81,733.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,864.20 : 121,004.70 = 54,620.20 : x
  2. Step 2: Convert to fraction form
    80,864.20/121,004.70 = 54,620.20/x
  3. Step 3: Cross multiply
    80,864.20x = 121,004.70 × 54,620.20
  4. Step 4: Simplify right side
    80,864.20x = 6,609,300,914.94
  5. Step 5: Solve for x
    x = 6,609,300,914.94/80,864.20
  6. Step 6: Final answer
    x = 81,733.34

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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.