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Finding the Fourth Proportional to 66,545, 99,833.98 and 19,797.72

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Solution

The fourth proportional to 66,545, 99,833.98 and 19,797.72 is: 29,701.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,545 : 99,833.98 = 19,797.72 : x
  2. Step 2: Convert to fraction form
    66,545/99,833.98 = 19,797.72/x
  3. Step 3: Cross multiply
    66,545x = 99,833.98 × 19,797.72
  4. Step 4: Simplify right side
    66,545x = 1,976,485,182.53
  5. Step 5: Solve for x
    x = 1,976,485,182.53/66,545
  6. Step 6: Final answer
    x = 29,701.48

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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.