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Finding the Fourth Proportional to 84,512.88, 126,587.08 and 79,544.46

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Solution

The fourth proportional to 84,512.88, 126,587.08 and 79,544.46 is: 119,145.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,512.88 : 126,587.08 = 79,544.46 : x
  2. Step 2: Convert to fraction form
    84,512.88/126,587.08 = 79,544.46/x
  3. Step 3: Cross multiply
    84,512.88x = 126,587.08 × 79,544.46
  4. Step 4: Simplify right side
    84,512.88x = 10,069,300,921.58
  5. Step 5: Solve for x
    x = 10,069,300,921.58/84,512.88
  6. Step 6: Final answer
    x = 119,145.16

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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.