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Finding the Fourth Proportional to 57,065.40, 85,668.30 and 36,005.40

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Solution

The fourth proportional to 57,065.40, 85,668.30 and 36,005.40 is: 54,052.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,065.40 : 85,668.30 = 36,005.40 : x
  2. Step 2: Convert to fraction form
    57,065.40/85,668.30 = 36,005.40/x
  3. Step 3: Cross multiply
    57,065.40x = 85,668.30 × 36,005.40
  4. Step 4: Simplify right side
    57,065.40x = 3,084,521,408.82
  5. Step 5: Solve for x
    x = 3,084,521,408.82/57,065.40
  6. Step 6: Final answer
    x = 54,052.39

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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.