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Finding the Fourth Proportional to 68,613.02, 102,905.12 and 19,353.50

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Solution

The fourth proportional to 68,613.02, 102,905.12 and 19,353.50 is: 29,026.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,613.02 : 102,905.12 = 19,353.50 : x
  2. Step 2: Convert to fraction form
    68,613.02/102,905.12 = 19,353.50/x
  3. Step 3: Cross multiply
    68,613.02x = 102,905.12 × 19,353.50
  4. Step 4: Simplify right side
    68,613.02x = 1,991,574,239.92
  5. Step 5: Solve for x
    x = 1,991,574,239.92/68,613.02
  6. Step 6: Final answer
    x = 29,026.19

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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.