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Finding the Fourth Proportional to 71,077.80, 106,616.70 and 36,085.80

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Solution

The fourth proportional to 71,077.80, 106,616.70 and 36,085.80 is: 54,128.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,077.80 : 106,616.70 = 36,085.80 : x
  2. Step 2: Convert to fraction form
    71,077.80/106,616.70 = 36,085.80/x
  3. Step 3: Cross multiply
    71,077.80x = 106,616.70 × 36,085.80
  4. Step 4: Simplify right side
    71,077.80x = 3,847,348,912.86
  5. Step 5: Solve for x
    x = 3,847,348,912.86/71,077.80
  6. Step 6: Final answer
    x = 54,128.70

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1.5x scale

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.