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Finding the Fourth Proportional to 65,707.56, 98,559.90 and 18,964.44

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Solution

The fourth proportional to 65,707.56, 98,559.90 and 18,964.44 is: 28,446.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,707.56 : 98,559.90 = 18,964.44 : x
  2. Step 2: Convert to fraction form
    65,707.56/98,559.90 = 18,964.44/x
  3. Step 3: Cross multiply
    65,707.56x = 98,559.90 × 18,964.44
  4. Step 4: Simplify right side
    65,707.56x = 1,869,133,309.96
  5. Step 5: Solve for x
    x = 1,869,133,309.96/65,707.56
  6. Step 6: Final answer
    x = 28,446.24

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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.