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Finding the Fourth Proportional to 45,133.64, 67,711.28 and 13,968.88

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Solution

The fourth proportional to 45,133.64, 67,711.28 and 13,968.88 is: 20,956.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,133.64 : 67,711.28 = 13,968.88 : x
  2. Step 2: Convert to fraction form
    45,133.64/67,711.28 = 13,968.88/x
  3. Step 3: Cross multiply
    45,133.64x = 67,711.28 × 13,968.88
  4. Step 4: Simplify right side
    45,133.64x = 945,850,744.97
  5. Step 5: Solve for x
    x = 945,850,744.97/45,133.64
  6. Step 6: Final answer
    x = 20,956.67

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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.