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Finding the Fourth Proportional to 45,988.64, 68,982.78 and 12,708.64

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Solution

The fourth proportional to 45,988.64, 68,982.78 and 12,708.64 is: 19,062.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,988.64 : 68,982.78 = 12,708.64 : x
  2. Step 2: Convert to fraction form
    45,988.64/68,982.78 = 12,708.64/x
  3. Step 3: Cross multiply
    45,988.64x = 68,982.78 × 12,708.64
  4. Step 4: Simplify right side
    45,988.64x = 876,677,144.76
  5. Step 5: Solve for x
    x = 876,677,144.76/45,988.64
  6. Step 6: Final answer
    x = 19,062.91

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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.