Home / 81,725.28-112,520.16-69,740.52

Finding the Fourth Proportional to 81,725.28, 112,520.16 and 69,740.52

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Solution

The fourth proportional to 81,725.28, 112,520.16 and 69,740.52 is: 96,019.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,725.28 : 112,520.16 = 69,740.52 : x
  2. Step 2: Convert to fraction form
    81,725.28/112,520.16 = 69,740.52/x
  3. Step 3: Cross multiply
    81,725.28x = 112,520.16 × 69,740.52
  4. Step 4: Simplify right side
    81,725.28x = 7,847,214,468.88
  5. Step 5: Solve for x
    x = 7,847,214,468.88/81,725.28
  6. Step 6: Final answer
    x = 96,019.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.