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Finding the Fourth Proportional to 65,157.44, 89,973.44 and 40,998.72

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Solution

The fourth proportional to 65,157.44, 89,973.44 and 40,998.72 is: 56,613.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,157.44 : 89,973.44 = 40,998.72 : x
  2. Step 2: Convert to fraction form
    65,157.44/89,973.44 = 40,998.72/x
  3. Step 3: Cross multiply
    65,157.44x = 89,973.44 × 40,998.72
  4. Step 4: Simplify right side
    65,157.44x = 3,688,795,874.00
  5. Step 5: Solve for x
    x = 3,688,795,874.00/65,157.44
  6. Step 6: Final answer
    x = 56,613.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.