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Finding the Fourth Proportional to 47,679.89, 71,492.02 and 14,389.97

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Solution

The fourth proportional to 47,679.89, 71,492.02 and 14,389.97 is: 21,576.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,679.89 : 71,492.02 = 14,389.97 : x
  2. Step 2: Convert to fraction form
    47,679.89/71,492.02 = 14,389.97/x
  3. Step 3: Cross multiply
    47,679.89x = 71,492.02 × 14,389.97
  4. Step 4: Simplify right side
    47,679.89x = 1,028,767,629.60
  5. Step 5: Solve for x
    x = 1,028,767,629.60/47,679.89
  6. Step 6: Final answer
    x = 21,576.55

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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.