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Finding the Fourth Proportional to 85,622.70, 118,156.42 and 47,383.86

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Solution

The fourth proportional to 85,622.70, 118,156.42 and 47,383.86 is: 65,388.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,622.70 : 118,156.42 = 47,383.86 : x
  2. Step 2: Convert to fraction form
    85,622.70/118,156.42 = 47,383.86/x
  3. Step 3: Cross multiply
    85,622.70x = 118,156.42 × 47,383.86
  4. Step 4: Simplify right side
    85,622.70x = 5,598,707,433.38
  5. Step 5: Solve for x
    x = 5,598,707,433.38/85,622.70
  6. Step 6: Final answer
    x = 65,388.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.