Home / 75,003.78-112,376.39-49,687.50

Finding the Fourth Proportional to 75,003.78, 112,376.39 and 49,687.50

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Solution

The fourth proportional to 75,003.78, 112,376.39 and 49,687.50 is: 74,445.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,003.78 : 112,376.39 = 49,687.50 : x
  2. Step 2: Convert to fraction form
    75,003.78/112,376.39 = 49,687.50/x
  3. Step 3: Cross multiply
    75,003.78x = 112,376.39 × 49,687.50
  4. Step 4: Simplify right side
    75,003.78x = 5,583,701,878.13
  5. Step 5: Solve for x
    x = 5,583,701,878.13/75,003.78
  6. Step 6: Final answer
    x = 74,445.61

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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.