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Finding the Fourth Proportional to 81,751.14, 122,627.97 and 25,588.98

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Solution

The fourth proportional to 81,751.14, 122,627.97 and 25,588.98 is: 38,383.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,751.14 : 122,627.97 = 25,588.98 : x
  2. Step 2: Convert to fraction form
    81,751.14/122,627.97 = 25,588.98/x
  3. Step 3: Cross multiply
    81,751.14x = 122,627.97 × 25,588.98
  4. Step 4: Simplify right side
    81,751.14x = 3,137,924,671.77
  5. Step 5: Solve for x
    x = 3,137,924,671.77/81,751.14
  6. Step 6: Final answer
    x = 38,383.86

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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.