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Finding the Fourth Proportional to 64,200.45, 96,300.68 and 16,815.45

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Solution

The fourth proportional to 64,200.45, 96,300.68 and 16,815.45 is: 25,223.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,200.45 : 96,300.68 = 16,815.45 : x
  2. Step 2: Convert to fraction form
    64,200.45/96,300.68 = 16,815.45/x
  3. Step 3: Cross multiply
    64,200.45x = 96,300.68 × 16,815.45
  4. Step 4: Simplify right side
    64,200.45x = 1,619,339,185.43
  5. Step 5: Solve for x
    x = 1,619,339,185.43/64,200.45
  6. Step 6: Final answer
    x = 25,223.18

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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.