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Finding the Fourth Proportional to 68,645.72, 102,774.45 and 43,623.74

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Solution

The fourth proportional to 68,645.72, 102,774.45 and 43,623.74 is: 65,312.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,645.72 : 102,774.45 = 43,623.74 : x
  2. Step 2: Convert to fraction form
    68,645.72/102,774.45 = 43,623.74/x
  3. Step 3: Cross multiply
    68,645.72x = 102,774.45 × 43,623.74
  4. Step 4: Simplify right side
    68,645.72x = 4,483,405,885.44
  5. Step 5: Solve for x
    x = 4,483,405,885.44/68,645.72
  6. Step 6: Final answer
    x = 65,312.24

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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.