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Finding the Fourth Proportional to 98,878.39, 136,452.41 and 53,556.19

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Solution

The fourth proportional to 98,878.39, 136,452.41 and 53,556.19 is: 73,907.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,878.39 : 136,452.41 = 53,556.19 : x
  2. Step 2: Convert to fraction form
    98,878.39/136,452.41 = 53,556.19/x
  3. Step 3: Cross multiply
    98,878.39x = 136,452.41 × 53,556.19
  4. Step 4: Simplify right side
    98,878.39x = 7,307,871,195.92
  5. Step 5: Solve for x
    x = 7,307,871,195.92/98,878.39
  6. Step 6: Final answer
    x = 73,907.67

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