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Finding the Fourth Proportional to 79,520.64, 109,737.26 and 43,709.88

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Solution

The fourth proportional to 79,520.64, 109,737.26 and 43,709.88 is: 60,318.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,520.64 : 109,737.26 = 43,709.88 : x
  2. Step 2: Convert to fraction form
    79,520.64/109,737.26 = 43,709.88/x
  3. Step 3: Cross multiply
    79,520.64x = 109,737.26 × 43,709.88
  4. Step 4: Simplify right side
    79,520.64x = 4,796,602,521.92
  5. Step 5: Solve for x
    x = 4,796,602,521.92/79,520.64
  6. Step 6: Final answer
    x = 60,318.96

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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.