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Finding the Fourth Proportional to 79,161.49, 109,237.17 and 43,345.72

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Solution

The fourth proportional to 79,161.49, 109,237.17 and 43,345.72 is: 59,813.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,161.49 : 109,237.17 = 43,345.72 : x
  2. Step 2: Convert to fraction form
    79,161.49/109,237.17 = 43,345.72/x
  3. Step 3: Cross multiply
    79,161.49x = 109,237.17 × 43,345.72
  4. Step 4: Simplify right side
    79,161.49x = 4,734,963,784.41
  5. Step 5: Solve for x
    x = 4,734,963,784.41/79,161.49
  6. Step 6: Final answer
    x = 59,813.98

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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.