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Finding the Fourth Proportional to 66,369.60, 99,554.22 and 54,658.08

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Solution

The fourth proportional to 66,369.60, 99,554.22 and 54,658.08 is: 81,986.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,369.60 : 99,554.22 = 54,658.08 : x
  2. Step 2: Convert to fraction form
    66,369.60/99,554.22 = 54,658.08/x
  3. Step 3: Cross multiply
    66,369.60x = 99,554.22 × 54,658.08
  4. Step 4: Simplify right side
    66,369.60x = 5,441,442,521.10
  5. Step 5: Solve for x
    x = 5,441,442,521.10/66,369.60
  6. Step 6: Final answer
    x = 81,986.97

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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.