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Finding the Fourth Proportional to 30,564.69, 45,842.12 and 8,372.88

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Solution

The fourth proportional to 30,564.69, 45,842.12 and 8,372.88 is: 12,557.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,564.69 : 45,842.12 = 8,372.88 : x
  2. Step 2: Convert to fraction form
    30,564.69/45,842.12 = 8,372.88/x
  3. Step 3: Cross multiply
    30,564.69x = 45,842.12 × 8,372.88
  4. Step 4: Simplify right side
    30,564.69x = 383,830,548.77
  5. Step 5: Solve for x
    x = 383,830,548.77/30,564.69
  6. Step 6: Final answer
    x = 12,557.97

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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.