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Finding the Fourth Proportional to 29,159.20, 43,738.80 and 8,099.20

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Solution

The fourth proportional to 29,159.20, 43,738.80 and 8,099.20 is: 12,148.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,159.20 : 43,738.80 = 8,099.20 : x
  2. Step 2: Convert to fraction form
    29,159.20/43,738.80 = 8,099.20/x
  3. Step 3: Cross multiply
    29,159.20x = 43,738.80 × 8,099.20
  4. Step 4: Simplify right side
    29,159.20x = 354,249,288.96
  5. Step 5: Solve for x
    x = 354,249,288.96/29,159.20
  6. Step 6: Final answer
    x = 12,148.80

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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.