Home / 45,120.75-67,690.53-13,529.53

Finding the Fourth Proportional to 45,120.75, 67,690.53 and 13,529.53

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Solution

The fourth proportional to 45,120.75, 67,690.53 and 13,529.53 is: 20,297.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,120.75 : 67,690.53 = 13,529.53 : x
  2. Step 2: Convert to fraction form
    45,120.75/67,690.53 = 13,529.53/x
  3. Step 3: Cross multiply
    45,120.75x = 67,690.53 × 13,529.53
  4. Step 4: Simplify right side
    45,120.75x = 915,821,056.35
  5. Step 5: Solve for x
    x = 915,821,056.35/45,120.75
  6. Step 6: Final answer
    x = 20,297.12

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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.