Home / 80,356.61-120,381.82-49,913.57

Finding the Fourth Proportional to 80,356.61, 120,381.82 and 49,913.57

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Solution

The fourth proportional to 80,356.61, 120,381.82 and 49,913.57 is: 74,775.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,356.61 : 120,381.82 = 49,913.57 : x
  2. Step 2: Convert to fraction form
    80,356.61/120,381.82 = 49,913.57/x
  3. Step 3: Cross multiply
    80,356.61x = 120,381.82 × 49,913.57
  4. Step 4: Simplify right side
    80,356.61x = 6,008,686,575.47
  5. Step 5: Solve for x
    x = 6,008,686,575.47/80,356.61
  6. Step 6: Final answer
    x = 74,775.26

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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.