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Finding the Fourth Proportional to 79,643.34, 119,538.96 and 40,228.17

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Solution

The fourth proportional to 79,643.34, 119,538.96 and 40,228.17 is: 60,379.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,643.34 : 119,538.96 = 40,228.17 : x
  2. Step 2: Convert to fraction form
    79,643.34/119,538.96 = 40,228.17/x
  3. Step 3: Cross multiply
    79,643.34x = 119,538.96 × 40,228.17
  4. Step 4: Simplify right side
    79,643.34x = 4,808,833,604.50
  5. Step 5: Solve for x
    x = 4,808,833,604.50/79,643.34
  6. Step 6: Final answer
    x = 60,379.61

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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.