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Finding the Fourth Proportional to 80,640.34, 111,287.44 and 44,830.90

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Solution

The fourth proportional to 80,640.34, 111,287.44 and 44,830.90 is: 61,868.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,640.34 : 111,287.44 = 44,830.90 : x
  2. Step 2: Convert to fraction form
    80,640.34/111,287.44 = 44,830.90/x
  3. Step 3: Cross multiply
    80,640.34x = 111,287.44 × 44,830.90
  4. Step 4: Simplify right side
    80,640.34x = 4,989,116,093.90
  5. Step 5: Solve for x
    x = 4,989,116,093.90/80,640.34
  6. Step 6: Final answer
    x = 61,868.74

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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.