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Finding the Fourth Proportional to 29,043.66, 43,560.46 and 7,978.68

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Solution

The fourth proportional to 29,043.66, 43,560.46 and 7,978.68 is: 11,966.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,043.66 : 43,560.46 = 7,978.68 : x
  2. Step 2: Convert to fraction form
    29,043.66/43,560.46 = 7,978.68/x
  3. Step 3: Cross multiply
    29,043.66x = 43,560.46 × 7,978.68
  4. Step 4: Simplify right side
    29,043.66x = 347,554,951.05
  5. Step 5: Solve for x
    x = 347,554,951.05/29,043.66
  6. Step 6: Final answer
    x = 11,966.64

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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.