Home / 75,743.12-112,720.60-73,220.43

Finding the Fourth Proportional to 75,743.12, 112,720.60 and 73,220.43

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Solution

The fourth proportional to 75,743.12, 112,720.60 and 73,220.43 is: 108,966.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,743.12 : 112,720.60 = 73,220.43 : x
  2. Step 2: Convert to fraction form
    75,743.12/112,720.60 = 73,220.43/x
  3. Step 3: Cross multiply
    75,743.12x = 112,720.60 × 73,220.43
  4. Step 4: Simplify right side
    75,743.12x = 8,253,450,801.86
  5. Step 5: Solve for x
    x = 8,253,450,801.86/75,743.12
  6. Step 6: Final answer
    x = 108,966.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.