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Finding the Fourth Proportional to 45,003.42, 67,512.42 and 13,838.67

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Solution

The fourth proportional to 45,003.42, 67,512.42 and 13,838.67 is: 20,760.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,003.42 : 67,512.42 = 13,838.67 : x
  2. Step 2: Convert to fraction form
    45,003.42/67,512.42 = 13,838.67/x
  3. Step 3: Cross multiply
    45,003.42x = 67,512.42 × 13,838.67
  4. Step 4: Simplify right side
    45,003.42x = 934,282,101.28
  5. Step 5: Solve for x
    x = 934,282,101.28/45,003.42
  6. Step 6: Final answer
    x = 20,760.25

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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.