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Finding the Fourth Proportional to 78,208.99, 107,927.72 and 43,753.35

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Solution

The fourth proportional to 78,208.99, 107,927.72 and 43,753.35 is: 60,379.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,208.99 : 107,927.72 = 43,753.35 : x
  2. Step 2: Convert to fraction form
    78,208.99/107,927.72 = 43,753.35/x
  3. Step 3: Cross multiply
    78,208.99x = 107,927.72 × 43,753.35
  4. Step 4: Simplify right side
    78,208.99x = 4,722,198,549.46
  5. Step 5: Solve for x
    x = 4,722,198,549.46/78,208.99
  6. Step 6: Final answer
    x = 60,379.23

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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.