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Finding the Fourth Proportional to 84,604.60, 126,817.59 and 28,391.41

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Solution

The fourth proportional to 84,604.60, 126,817.59 and 28,391.41 is: 42,557.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,604.60 : 126,817.59 = 28,391.41 : x
  2. Step 2: Convert to fraction form
    84,604.60/126,817.59 = 28,391.41/x
  3. Step 3: Cross multiply
    84,604.60x = 126,817.59 × 28,391.41
  4. Step 4: Simplify right side
    84,604.60x = 3,600,529,558.81
  5. Step 5: Solve for x
    x = 3,600,529,558.81/84,604.60
  6. Step 6: Final answer
    x = 42,557.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.