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Finding the Fourth Proportional to 66,443.87, 99,682.65 and 22,070.86

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Solution

The fourth proportional to 66,443.87, 99,682.65 and 22,070.86 is: 33,111.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,443.87 : 99,682.65 = 22,070.86 : x
  2. Step 2: Convert to fraction form
    66,443.87/99,682.65 = 22,070.86/x
  3. Step 3: Cross multiply
    66,443.87x = 99,682.65 × 22,070.86
  4. Step 4: Simplify right side
    66,443.87x = 2,200,081,563.37
  5. Step 5: Solve for x
    x = 2,200,081,563.37/66,443.87
  6. Step 6: Final answer
    x = 33,111.88

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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.