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Finding the Fourth Proportional to 43,685.94, 65,528.97 and 18,724.03

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Solution

The fourth proportional to 43,685.94, 65,528.97 and 18,724.03 is: 28,086.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,685.94 : 65,528.97 = 18,724.03 : x
  2. Step 2: Convert to fraction form
    43,685.94/65,528.97 = 18,724.03/x
  3. Step 3: Cross multiply
    43,685.94x = 65,528.97 × 18,724.03
  4. Step 4: Simplify right side
    43,685.94x = 1,226,966,400.15
  5. Step 5: Solve for x
    x = 1,226,966,400.15/43,685.94
  6. Step 6: Final answer
    x = 28,086.07

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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.