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Finding the Fourth Proportional to 29,079.60, 43,619.40 and 19,748.40

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Solution

The fourth proportional to 29,079.60, 43,619.40 and 19,748.40 is: 29,622.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,079.60 : 43,619.40 = 19,748.40 : x
  2. Step 2: Convert to fraction form
    29,079.60/43,619.40 = 19,748.40/x
  3. Step 3: Cross multiply
    29,079.60x = 43,619.40 × 19,748.40
  4. Step 4: Simplify right side
    29,079.60x = 861,413,358.96
  5. Step 5: Solve for x
    x = 861,413,358.96/29,079.60
  6. Step 6: Final answer
    x = 29,622.60

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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.