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Finding the Fourth Proportional to 59,891.20, 89,909.70 and 30,293.80

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Solution

The fourth proportional to 59,891.20, 89,909.70 and 30,293.80 is: 45,477.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,891.20 : 89,909.70 = 30,293.80 : x
  2. Step 2: Convert to fraction form
    59,891.20/89,909.70 = 30,293.80/x
  3. Step 3: Cross multiply
    59,891.20x = 89,909.70 × 30,293.80
  4. Step 4: Simplify right side
    59,891.20x = 2,723,706,469.86
  5. Step 5: Solve for x
    x = 2,723,706,469.86/59,891.20
  6. Step 6: Final answer
    x = 45,477.57

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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.