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Finding the Fourth Proportional to 68,874.80, 103,298.54 and 18,941.99

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Solution

The fourth proportional to 68,874.80, 103,298.54 and 18,941.99 is: 28,409.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,874.80 : 103,298.54 = 18,941.99 : x
  2. Step 2: Convert to fraction form
    68,874.80/103,298.54 = 18,941.99/x
  3. Step 3: Cross multiply
    68,874.80x = 103,298.54 × 18,941.99
  4. Step 4: Simplify right side
    68,874.80x = 1,956,679,300.49
  5. Step 5: Solve for x
    x = 1,956,679,300.49/68,874.80
  6. Step 6: Final answer
    x = 28,409.22

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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.