Home / 45,319.81-67,981.06-21,629.85

Finding the Fourth Proportional to 45,319.81, 67,981.06 and 21,629.85

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Solution

The fourth proportional to 45,319.81, 67,981.06 and 21,629.85 is: 32,445.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,319.81 : 67,981.06 = 21,629.85 : x
  2. Step 2: Convert to fraction form
    45,319.81/67,981.06 = 21,629.85/x
  3. Step 3: Cross multiply
    45,319.81x = 67,981.06 × 21,629.85
  4. Step 4: Simplify right side
    45,319.81x = 1,470,420,163.47
  5. Step 5: Solve for x
    x = 1,470,420,163.47/45,319.81
  6. Step 6: Final answer
    x = 32,445.42

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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.