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Finding the Fourth Proportional to 74,719.80, 112,079.70 and 43,183.80

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Solution

The fourth proportional to 74,719.80, 112,079.70 and 43,183.80 is: 64,775.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,719.80 : 112,079.70 = 43,183.80 : x
  2. Step 2: Convert to fraction form
    74,719.80/112,079.70 = 43,183.80/x
  3. Step 3: Cross multiply
    74,719.80x = 112,079.70 × 43,183.80
  4. Step 4: Simplify right side
    74,719.80x = 4,840,027,348.86
  5. Step 5: Solve for x
    x = 4,840,027,348.86/74,719.80
  6. Step 6: Final answer
    x = 64,775.70

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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.