Home / 80,983.52-121,516.31-54,632.91

Finding the Fourth Proportional to 80,983.52, 121,516.31 and 54,632.91

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Solution

The fourth proportional to 80,983.52, 121,516.31 and 54,632.91 is: 81,977.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,983.52 : 121,516.31 = 54,632.91 : x
  2. Step 2: Convert to fraction form
    80,983.52/121,516.31 = 54,632.91/x
  3. Step 3: Cross multiply
    80,983.52x = 121,516.31 × 54,632.91
  4. Step 4: Simplify right side
    80,983.52x = 6,638,789,627.76
  5. Step 5: Solve for x
    x = 6,638,789,627.76/80,983.52
  6. Step 6: Final answer
    x = 81,977.04

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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.