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Finding the Fourth Proportional to 65,170.70, 97,874.85 and 57,005.90

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Solution

The fourth proportional to 65,170.70, 97,874.85 and 57,005.90 is: 85,612.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,170.70 : 97,874.85 = 57,005.90 : x
  2. Step 2: Convert to fraction form
    65,170.70/97,874.85 = 57,005.90/x
  3. Step 3: Cross multiply
    65,170.70x = 97,874.85 × 57,005.90
  4. Step 4: Simplify right side
    65,170.70x = 5,579,443,911.62
  5. Step 5: Solve for x
    x = 5,579,443,911.62/65,170.70
  6. Step 6: Final answer
    x = 85,612.77

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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.