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Finding the Fourth Proportional to 62,704.64, 94,072 and 20,587.20

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Solution

The fourth proportional to 62,704.64, 94,072 and 20,587.20 is: 30,885.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,704.64 : 94,072 = 20,587.20 : x
  2. Step 2: Convert to fraction form
    62,704.64/94,072 = 20,587.20/x
  3. Step 3: Cross multiply
    62,704.64x = 94,072 × 20,587.20
  4. Step 4: Simplify right side
    62,704.64x = 1,936,679,078.40
  5. Step 5: Solve for x
    x = 1,936,679,078.40/62,704.64
  6. Step 6: Final answer
    x = 30,885.74

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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.