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Finding the Fourth Proportional to 79,097.10, 109,153.74 and 43,287.40

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Solution

The fourth proportional to 79,097.10, 109,153.74 and 43,287.40 is: 59,736.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,097.10 : 109,153.74 = 43,287.40 : x
  2. Step 2: Convert to fraction form
    79,097.10/109,153.74 = 43,287.40/x
  3. Step 3: Cross multiply
    79,097.10x = 109,153.74 × 43,287.40
  4. Step 4: Simplify right side
    79,097.10x = 4,724,981,604.88
  5. Step 5: Solve for x
    x = 4,724,981,604.88/79,097.10
  6. Step 6: Final answer
    x = 59,736.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.