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Finding the Fourth Proportional to 91,277.96, 136,583.88 and 53,855.96

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Solution

The fourth proportional to 91,277.96, 136,583.88 and 53,855.96 is: 80,587.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,277.96 : 136,583.88 = 53,855.96 : x
  2. Step 2: Convert to fraction form
    91,277.96/136,583.88 = 53,855.96/x
  3. Step 3: Cross multiply
    91,277.96x = 136,583.88 × 53,855.96
  4. Step 4: Simplify right side
    91,277.96x = 7,355,855,295.01
  5. Step 5: Solve for x
    x = 7,355,855,295.01/91,277.96
  6. Step 6: Final answer
    x = 80,587.42

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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.