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Finding the Fourth Proportional to 45,706.77, 68,568.73 and 20,748.56

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Solution

The fourth proportional to 45,706.77, 68,568.73 and 20,748.56 is: 31,126.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,706.77 : 68,568.73 = 20,748.56 : x
  2. Step 2: Convert to fraction form
    45,706.77/68,568.73 = 20,748.56/x
  3. Step 3: Cross multiply
    45,706.77x = 68,568.73 × 20,748.56
  4. Step 4: Simplify right side
    45,706.77x = 1,422,702,528.08
  5. Step 5: Solve for x
    x = 1,422,702,528.08/45,706.77
  6. Step 6: Final answer
    x = 31,126.74

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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.