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Finding the Fourth Proportional to 66,307.91, 99,460.86 and 16,388.00

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Solution

The fourth proportional to 66,307.91, 99,460.86 and 16,388.00 is: 24,581.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,307.91 : 99,460.86 = 16,388.00 : x
  2. Step 2: Convert to fraction form
    66,307.91/99,460.86 = 16,388.00/x
  3. Step 3: Cross multiply
    66,307.91x = 99,460.86 × 16,388.00
  4. Step 4: Simplify right side
    66,307.91x = 1,629,964,076.38
  5. Step 5: Solve for x
    x = 1,629,964,076.38/66,307.91
  6. Step 6: Final answer
    x = 24,581.75

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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.