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Finding the Fourth Proportional to 69,374.30, 103,452.30 and 68,742.81

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Solution

The fourth proportional to 69,374.30, 103,452.30 and 68,742.81 is: 102,510.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,374.30 : 103,452.30 = 68,742.81 : x
  2. Step 2: Convert to fraction form
    69,374.30/103,452.30 = 68,742.81/x
  3. Step 3: Cross multiply
    69,374.30x = 103,452.30 × 68,742.81
  4. Step 4: Simplify right side
    69,374.30x = 7,111,601,802.96
  5. Step 5: Solve for x
    x = 7,111,601,802.96/69,374.30
  6. Step 6: Final answer
    x = 102,510.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.