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Finding the Fourth Proportional to 68,688.56, 103,024.58 and 18,773.01

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Solution

The fourth proportional to 68,688.56, 103,024.58 and 18,773.01 is: 28,157.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,688.56 : 103,024.58 = 18,773.01 : x
  2. Step 2: Convert to fraction form
    68,688.56/103,024.58 = 18,773.01/x
  3. Step 3: Cross multiply
    68,688.56x = 103,024.58 × 18,773.01
  4. Step 4: Simplify right side
    68,688.56x = 1,934,081,376.72
  5. Step 5: Solve for x
    x = 1,934,081,376.72/68,688.56
  6. Step 6: Final answer
    x = 28,157.26

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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.