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Finding the Fourth Proportional to 79,369.71, 109,531.56 and 43,563.06

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Solution

The fourth proportional to 79,369.71, 109,531.56 and 43,563.06 is: 60,117.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,369.71 : 109,531.56 = 43,563.06 : x
  2. Step 2: Convert to fraction form
    79,369.71/109,531.56 = 43,563.06/x
  3. Step 3: Cross multiply
    79,369.71x = 109,531.56 × 43,563.06
  4. Step 4: Simplify right side
    79,369.71x = 4,771,529,920.17
  5. Step 5: Solve for x
    x = 4,771,529,920.17/79,369.71
  6. Step 6: Final answer
    x = 60,117.77

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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.