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Finding the Fourth Proportional to 79,423.34, 119,692.81 and 71,535.74

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Solution

The fourth proportional to 79,423.34, 119,692.81 and 71,535.74 is: 107,806.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,423.34 : 119,692.81 = 71,535.74 : x
  2. Step 2: Convert to fraction form
    79,423.34/119,692.81 = 71,535.74/x
  3. Step 3: Cross multiply
    79,423.34x = 119,692.81 × 71,535.74
  4. Step 4: Simplify right side
    79,423.34x = 8,562,313,736.03
  5. Step 5: Solve for x
    x = 8,562,313,736.03/79,423.34
  6. Step 6: Final answer
    x = 107,806.01

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.