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Finding the Fourth Proportional to 36,780.06, 55,170.09 and 9,078.06

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Solution

The fourth proportional to 36,780.06, 55,170.09 and 9,078.06 is: 13,617.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,780.06 : 55,170.09 = 9,078.06 : x
  2. Step 2: Convert to fraction form
    36,780.06/55,170.09 = 9,078.06/x
  3. Step 3: Cross multiply
    36,780.06x = 55,170.09 × 9,078.06
  4. Step 4: Simplify right side
    36,780.06x = 500,837,387.23
  5. Step 5: Solve for x
    x = 500,837,387.23/36,780.06
  6. Step 6: Final answer
    x = 13,617.09

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1.5x scale

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.