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Finding the Fourth Proportional to 36,909.90, 55,365.04 and 9,207.90

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Solution

The fourth proportional to 36,909.90, 55,365.04 and 9,207.90 is: 13,811.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,909.90 : 55,365.04 = 9,207.90 : x
  2. Step 2: Convert to fraction form
    36,909.90/55,365.04 = 9,207.90/x
  3. Step 3: Cross multiply
    36,909.90x = 55,365.04 × 9,207.90
  4. Step 4: Simplify right side
    36,909.90x = 509,795,751.82
  5. Step 5: Solve for x
    x = 509,795,751.82/36,909.90
  6. Step 6: Final answer
    x = 13,811.90

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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.