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Finding the Fourth Proportional to 66,189.66, 99,295.43 and 21,819.08

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Solution

The fourth proportional to 66,189.66, 99,295.43 and 21,819.08 is: 32,732.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,189.66 : 99,295.43 = 21,819.08 : x
  2. Step 2: Convert to fraction form
    66,189.66/99,295.43 = 21,819.08/x
  3. Step 3: Cross multiply
    66,189.66x = 99,295.43 × 21,819.08
  4. Step 4: Simplify right side
    66,189.66x = 2,166,534,325.23
  5. Step 5: Solve for x
    x = 2,166,534,325.23/66,189.66
  6. Step 6: Final answer
    x = 32,732.22

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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.