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Finding the Fourth Proportional to 68,683.93, 103,040.63 and 21,298.01

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Solution

The fourth proportional to 68,683.93, 103,040.63 and 21,298.01 is: 31,951.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,683.93 : 103,040.63 = 21,298.01 : x
  2. Step 2: Convert to fraction form
    68,683.93/103,040.63 = 21,298.01/x
  3. Step 3: Cross multiply
    68,683.93x = 103,040.63 × 21,298.01
  4. Step 4: Simplify right side
    68,683.93x = 2,194,559,974.25
  5. Step 5: Solve for x
    x = 2,194,559,974.25/68,683.93
  6. Step 6: Final answer
    x = 31,951.58

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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.