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Finding the Fourth Proportional to 45,989.64, 68,984.28 and 12,709.64

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Solution

The fourth proportional to 45,989.64, 68,984.28 and 12,709.64 is: 19,064.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,989.64 : 68,984.28 = 12,709.64 : x
  2. Step 2: Convert to fraction form
    45,989.64/68,984.28 = 12,709.64/x
  3. Step 3: Cross multiply
    45,989.64x = 68,984.28 × 12,709.64
  4. Step 4: Simplify right side
    45,989.64x = 876,765,364.46
  5. Step 5: Solve for x
    x = 876,765,364.46/45,989.64
  6. Step 6: Final answer
    x = 19,064.41

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Similar ratio
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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.