Home / 98,218.78-135,558.36-57,942.54

Finding the Fourth Proportional to 98,218.78, 135,558.36 and 57,942.54

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Solution

The fourth proportional to 98,218.78, 135,558.36 and 57,942.54 is: 79,970.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,218.78 : 135,558.36 = 57,942.54 : x
  2. Step 2: Convert to fraction form
    98,218.78/135,558.36 = 57,942.54/x
  3. Step 3: Cross multiply
    98,218.78x = 135,558.36 × 57,942.54
  4. Step 4: Simplify right side
    98,218.78x = 7,854,595,696.63
  5. Step 5: Solve for x
    x = 7,854,595,696.63/98,218.78
  6. Step 6: Final answer
    x = 79,970.41

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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.