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Finding the Fourth Proportional to 66,438.80, 99,658.20 and 27,024.20

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Solution

The fourth proportional to 66,438.80, 99,658.20 and 27,024.20 is: 40,536.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,438.80 : 99,658.20 = 27,024.20 : x
  2. Step 2: Convert to fraction form
    66,438.80/99,658.20 = 27,024.20/x
  3. Step 3: Cross multiply
    66,438.80x = 99,658.20 × 27,024.20
  4. Step 4: Simplify right side
    66,438.80x = 2,693,183,128.44
  5. Step 5: Solve for x
    x = 2,693,183,128.44/66,438.80
  6. Step 6: Final answer
    x = 40,536.30

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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.