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Finding the Fourth Proportional to 57,170.84, 85,765.35 and 17,719.79

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Solution

The fourth proportional to 57,170.84, 85,765.35 and 17,719.79 is: 26,582.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,170.84 : 85,765.35 = 17,719.79 : x
  2. Step 2: Convert to fraction form
    57,170.84/85,765.35 = 17,719.79/x
  3. Step 3: Cross multiply
    57,170.84x = 85,765.35 × 17,719.79
  4. Step 4: Simplify right side
    57,170.84x = 1,519,743,562.45
  5. Step 5: Solve for x
    x = 1,519,743,562.45/57,170.84
  6. Step 6: Final answer
    x = 26,582.50

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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.