Home / 57,578.61-86,350.48-20,131.70

Finding the Fourth Proportional to 57,578.61, 86,350.48 and 20,131.70

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Solution

The fourth proportional to 57,578.61, 86,350.48 and 20,131.70 is: 30,191.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,578.61 : 86,350.48 = 20,131.70 : x
  2. Step 2: Convert to fraction form
    57,578.61/86,350.48 = 20,131.70/x
  3. Step 3: Cross multiply
    57,578.61x = 86,350.48 × 20,131.70
  4. Step 4: Simplify right side
    57,578.61x = 1,738,381,907.89
  5. Step 5: Solve for x
    x = 1,738,381,907.89/57,578.61
  6. Step 6: Final answer
    x = 30,191.45

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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.