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Finding the Fourth Proportional to 75,059.60, 112,553.04 and 30,668.72

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Solution

The fourth proportional to 75,059.60, 112,553.04 and 30,668.72 is: 45,988.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,059.60 : 112,553.04 = 30,668.72 : x
  2. Step 2: Convert to fraction form
    75,059.60/112,553.04 = 30,668.72/x
  3. Step 3: Cross multiply
    75,059.60x = 112,553.04 × 30,668.72
  4. Step 4: Simplify right side
    75,059.60x = 3,451,857,668.91
  5. Step 5: Solve for x
    x = 3,451,857,668.91/75,059.60
  6. Step 6: Final answer
    x = 45,988.22

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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.