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Finding the Fourth Proportional to 79,612.21, 109,865.03 and 43,804.53

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Solution

The fourth proportional to 79,612.21, 109,865.03 and 43,804.53 is: 60,450.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,612.21 : 109,865.03 = 43,804.53 : x
  2. Step 2: Convert to fraction form
    79,612.21/109,865.03 = 43,804.53/x
  3. Step 3: Cross multiply
    79,612.21x = 109,865.03 × 43,804.53
  4. Step 4: Simplify right side
    79,612.21x = 4,812,586,002.59
  5. Step 5: Solve for x
    x = 4,812,586,002.59/79,612.21
  6. Step 6: Final answer
    x = 60,450.35

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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.