Home / 45,168.53-67,768.51-20,211.21

Finding the Fourth Proportional to 45,168.53, 67,768.51 and 20,211.21

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Solution

The fourth proportional to 45,168.53, 67,768.51 and 20,211.21 is: 30,323.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,168.53 : 67,768.51 = 20,211.21 : x
  2. Step 2: Convert to fraction form
    45,168.53/67,768.51 = 20,211.21/x
  3. Step 3: Cross multiply
    45,168.53x = 67,768.51 × 20,211.21
  4. Step 4: Simplify right side
    45,168.53x = 1,369,683,536.47
  5. Step 5: Solve for x
    x = 1,369,683,536.47/45,168.53
  6. Step 6: Final answer
    x = 30,323.85

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1.5x scale

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.