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Finding the Fourth Proportional to 36,659.87, 54,978.81 and 19,120.13

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Solution

The fourth proportional to 36,659.87, 54,978.81 and 19,120.13 is: 28,674.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,659.87 : 54,978.81 = 19,120.13 : x
  2. Step 2: Convert to fraction form
    36,659.87/54,978.81 = 19,120.13/x
  3. Step 3: Cross multiply
    36,659.87x = 54,978.81 × 19,120.13
  4. Step 4: Simplify right side
    36,659.87x = 1,051,201,994.45
  5. Step 5: Solve for x
    x = 1,051,201,994.45/36,659.87
  6. Step 6: Final answer
    x = 28,674.46

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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.