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Finding the Fourth Proportional to 69,157.83, 95,478.48 and 65,172.03

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Solution

The fourth proportional to 69,157.83, 95,478.48 and 65,172.03 is: 89,975.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,157.83 : 95,478.48 = 65,172.03 : x
  2. Step 2: Convert to fraction form
    69,157.83/95,478.48 = 65,172.03/x
  3. Step 3: Cross multiply
    69,157.83x = 95,478.48 × 65,172.03
  4. Step 4: Simplify right side
    69,157.83x = 6,222,526,362.91
  5. Step 5: Solve for x
    x = 6,222,526,362.91/69,157.83
  6. Step 6: Final answer
    x = 89,975.73

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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.