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Finding the Fourth Proportional to 59,992.76, 89,989.61 and 20,550.21

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Solution

The fourth proportional to 59,992.76, 89,989.61 and 20,550.21 is: 30,825.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,992.76 : 89,989.61 = 20,550.21 : x
  2. Step 2: Convert to fraction form
    59,992.76/89,989.61 = 20,550.21/x
  3. Step 3: Cross multiply
    59,992.76x = 89,989.61 × 20,550.21
  4. Step 4: Simplify right side
    59,992.76x = 1,849,305,280.57
  5. Step 5: Solve for x
    x = 1,849,305,280.57/59,992.76
  6. Step 6: Final answer
    x = 30,825.48

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1.5x scale

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.