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Finding the Fourth Proportional to 79,723, 119,636.34 and 30,475

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Solution

The fourth proportional to 79,723, 119,636.34 and 30,475 is: 45,732.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,723 : 119,636.34 = 30,475 : x
  2. Step 2: Convert to fraction form
    79,723/119,636.34 = 30,475/x
  3. Step 3: Cross multiply
    79,723x = 119,636.34 × 30,475
  4. Step 4: Simplify right side
    79,723x = 3,645,917,461.50
  5. Step 5: Solve for x
    x = 3,645,917,461.50/79,723
  6. Step 6: Final answer
    x = 45,732.32

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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.