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Finding the Fourth Proportional to 29,159.80, 43,739.70 and 8,099.80

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Solution

The fourth proportional to 29,159.80, 43,739.70 and 8,099.80 is: 12,149.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,159.80 : 43,739.70 = 8,099.80 : x
  2. Step 2: Convert to fraction form
    29,159.80/43,739.70 = 8,099.80/x
  3. Step 3: Cross multiply
    29,159.80x = 43,739.70 × 8,099.80
  4. Step 4: Simplify right side
    29,159.80x = 354,282,822.06
  5. Step 5: Solve for x
    x = 354,282,822.06/29,159.80
  6. Step 6: Final answer
    x = 12,149.70

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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.