Home / 74,172.18-111,276.72-21,581.66

Finding the Fourth Proportional to 74,172.18, 111,276.72 and 21,581.66

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Solution

The fourth proportional to 74,172.18, 111,276.72 and 21,581.66 is: 32,377.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,172.18 : 111,276.72 = 21,581.66 : x
  2. Step 2: Convert to fraction form
    74,172.18/111,276.72 = 21,581.66/x
  3. Step 3: Cross multiply
    74,172.18x = 111,276.72 × 21,581.66
  4. Step 4: Simplify right side
    74,172.18x = 2,401,536,336.96
  5. Step 5: Solve for x
    x = 2,401,536,336.96/74,172.18
  6. Step 6: Final answer
    x = 32,377.86

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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.