Home / 81,609.12-112,622.60-45,801.86

Finding the Fourth Proportional to 81,609.12, 112,622.60 and 45,801.86

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Solution

The fourth proportional to 81,609.12, 112,622.60 and 45,801.86 is: 63,207.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,609.12 : 112,622.60 = 45,801.86 : x
  2. Step 2: Convert to fraction form
    81,609.12/112,622.60 = 45,801.86/x
  3. Step 3: Cross multiply
    81,609.12x = 112,622.60 × 45,801.86
  4. Step 4: Simplify right side
    81,609.12x = 5,158,324,109.43
  5. Step 5: Solve for x
    x = 5,158,324,109.43/81,609.12
  6. Step 6: Final answer
    x = 63,207.69

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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.