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Finding the Fourth Proportional to 85,348.70, 117,781.11 and 47,622.95

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Solution

The fourth proportional to 85,348.70, 117,781.11 and 47,622.95 is: 65,719.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,348.70 : 117,781.11 = 47,622.95 : x
  2. Step 2: Convert to fraction form
    85,348.70/117,781.11 = 47,622.95/x
  3. Step 3: Cross multiply
    85,348.70x = 117,781.11 × 47,622.95
  4. Step 4: Simplify right side
    85,348.70x = 5,609,083,912.47
  5. Step 5: Solve for x
    x = 5,609,083,912.47/85,348.70
  6. Step 6: Final answer
    x = 65,719.62

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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.