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Finding the Fourth Proportional to 66,607.06, 99,908.29 and 16,687.60

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Solution

The fourth proportional to 66,607.06, 99,908.29 and 16,687.60 is: 25,030.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,607.06 : 99,908.29 = 16,687.60 : x
  2. Step 2: Convert to fraction form
    66,607.06/99,908.29 = 16,687.60/x
  3. Step 3: Cross multiply
    66,607.06x = 99,908.29 × 16,687.60
  4. Step 4: Simplify right side
    66,607.06x = 1,667,229,580.20
  5. Step 5: Solve for x
    x = 1,667,229,580.20/66,607.06
  6. Step 6: Final answer
    x = 25,030.82

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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.