Home / 80,722.32-121,083.75-28,095

Finding the Fourth Proportional to 80,722.32, 121,083.75 and 28,095

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Solution

The fourth proportional to 80,722.32, 121,083.75 and 28,095 is: 42,142.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,722.32 : 121,083.75 = 28,095 : x
  2. Step 2: Convert to fraction form
    80,722.32/121,083.75 = 28,095/x
  3. Step 3: Cross multiply
    80,722.32x = 121,083.75 × 28,095
  4. Step 4: Simplify right side
    80,722.32x = 3,401,847,956.25
  5. Step 5: Solve for x
    x = 3,401,847,956.25/80,722.32
  6. Step 6: Final answer
    x = 42,142.59

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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.