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Finding the Fourth Proportional to 64,190.88, 96,295.20 and 19,821.12

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Solution

The fourth proportional to 64,190.88, 96,295.20 and 19,821.12 is: 29,734.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,190.88 : 96,295.20 = 19,821.12 : x
  2. Step 2: Convert to fraction form
    64,190.88/96,295.20 = 19,821.12/x
  3. Step 3: Cross multiply
    64,190.88x = 96,295.20 × 19,821.12
  4. Step 4: Simplify right side
    64,190.88x = 1,908,678,714.62
  5. Step 5: Solve for x
    x = 1,908,678,714.62/64,190.88
  6. Step 6: Final answer
    x = 29,734.42

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1.5x scale

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.