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Finding the Fourth Proportional to 79,379.94, 109,545.73 and 43,573.28

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Solution

The fourth proportional to 79,379.94, 109,545.73 and 43,573.28 is: 60,131.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,379.94 : 109,545.73 = 43,573.28 : x
  2. Step 2: Convert to fraction form
    79,379.94/109,545.73 = 43,573.28/x
  3. Step 3: Cross multiply
    79,379.94x = 109,545.73 × 43,573.28
  4. Step 4: Simplify right side
    79,379.94x = 4,773,266,520.23
  5. Step 5: Solve for x
    x = 4,773,266,520.23/79,379.94
  6. Step 6: Final answer
    x = 60,131.90

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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.