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Finding the Fourth Proportional to 66,581.53, 99,872.29 and 16,661.63

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Solution

The fourth proportional to 66,581.53, 99,872.29 and 16,661.63 is: 24,992.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,581.53 : 99,872.29 = 16,661.63 : x
  2. Step 2: Convert to fraction form
    66,581.53/99,872.29 = 16,661.63/x
  3. Step 3: Cross multiply
    66,581.53x = 99,872.29 × 16,661.63
  4. Step 4: Simplify right side
    66,581.53x = 1,664,035,143.23
  5. Step 5: Solve for x
    x = 1,664,035,143.23/66,581.53
  6. Step 6: Final answer
    x = 24,992.44

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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.