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Finding the Fourth Proportional to 80,075.66, 120,039.20 and 37,975.43

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Solution

The fourth proportional to 80,075.66, 120,039.20 and 37,975.43 is: 56,927.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,075.66 : 120,039.20 = 37,975.43 : x
  2. Step 2: Convert to fraction form
    80,075.66/120,039.20 = 37,975.43/x
  3. Step 3: Cross multiply
    80,075.66x = 120,039.20 × 37,975.43
  4. Step 4: Simplify right side
    80,075.66x = 4,558,540,489.48
  5. Step 5: Solve for x
    x = 4,558,540,489.48/80,075.66
  6. Step 6: Final answer
    x = 56,927.92

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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.