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Finding the Fourth Proportional to 98,104.58, 135,386.90 and 55,087.50

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Solution

The fourth proportional to 98,104.58, 135,386.90 and 55,087.50 is: 76,022.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,104.58 : 135,386.90 = 55,087.50 : x
  2. Step 2: Convert to fraction form
    98,104.58/135,386.90 = 55,087.50/x
  3. Step 3: Cross multiply
    98,104.58x = 135,386.90 × 55,087.50
  4. Step 4: Simplify right side
    98,104.58x = 7,458,125,578.31
  5. Step 5: Solve for x
    x = 7,458,125,578.31/98,104.58
  6. Step 6: Final answer
    x = 76,022.20

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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.