Home / 98,077.87-135,350.09-55,642.78

Finding the Fourth Proportional to 98,077.87, 135,350.09 and 55,642.78

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Solution

The fourth proportional to 98,077.87, 135,350.09 and 55,642.78 is: 76,788.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,077.87 : 135,350.09 = 55,642.78 : x
  2. Step 2: Convert to fraction form
    98,077.87/135,350.09 = 55,642.78/x
  3. Step 3: Cross multiply
    98,077.87x = 135,350.09 × 55,642.78
  4. Step 4: Simplify right side
    98,077.87x = 7,531,255,280.85
  5. Step 5: Solve for x
    x = 7,531,255,280.85/98,077.87
  6. Step 6: Final answer
    x = 76,788.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.