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Finding the Fourth Proportional to 79,230.88, 109,341.44 and 43,420.96

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Solution

The fourth proportional to 79,230.88, 109,341.44 and 43,420.96 is: 59,922.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,230.88 : 109,341.44 = 43,420.96 : x
  2. Step 2: Convert to fraction form
    79,230.88/109,341.44 = 43,420.96/x
  3. Step 3: Cross multiply
    79,230.88x = 109,341.44 × 43,420.96
  4. Step 4: Simplify right side
    79,230.88x = 4,747,710,292.58
  5. Step 5: Solve for x
    x = 4,747,710,292.58/79,230.88
  6. Step 6: Final answer
    x = 59,922.47

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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.