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Finding the Fourth Proportional to 66,603.02, 99,924.54 and 19,855.88

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Solution

The fourth proportional to 66,603.02, 99,924.54 and 19,855.88 is: 29,789.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,603.02 : 99,924.54 = 19,855.88 : x
  2. Step 2: Convert to fraction form
    66,603.02/99,924.54 = 19,855.88/x
  3. Step 3: Cross multiply
    66,603.02x = 99,924.54 × 19,855.88
  4. Step 4: Simplify right side
    66,603.02x = 1,984,089,675.30
  5. Step 5: Solve for x
    x = 1,984,089,675.30/66,603.02
  6. Step 6: Final answer
    x = 29,789.79

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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.