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Finding the Fourth Proportional to 65,663.46, 98,495.55 and 18,917.46

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Solution

The fourth proportional to 65,663.46, 98,495.55 and 18,917.46 is: 28,376.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,663.46 : 98,495.55 = 18,917.46 : x
  2. Step 2: Convert to fraction form
    65,663.46/98,495.55 = 18,917.46/x
  3. Step 3: Cross multiply
    65,663.46x = 98,495.55 × 18,917.46
  4. Step 4: Simplify right side
    65,663.46x = 1,863,285,627.30
  5. Step 5: Solve for x
    x = 1,863,285,627.30/65,663.46
  6. Step 6: Final answer
    x = 28,376.29

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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.