Home / 98,078.79-135,344.73-55,636.41

Finding the Fourth Proportional to 98,078.79, 135,344.73 and 55,636.41

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Solution

The fourth proportional to 98,078.79, 135,344.73 and 55,636.41 is: 76,775.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,078.79 : 135,344.73 = 55,636.41 : x
  2. Step 2: Convert to fraction form
    98,078.79/135,344.73 = 55,636.41/x
  3. Step 3: Cross multiply
    98,078.79x = 135,344.73 × 55,636.41
  4. Step 4: Simplify right side
    98,078.79x = 7,530,094,889.62
  5. Step 5: Solve for x
    x = 7,530,094,889.62/98,078.79
  6. Step 6: Final answer
    x = 76,775.98

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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.