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Finding the Fourth Proportional to 98,271.78, 135,615.18 and 53,559.78

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Solution

The fourth proportional to 98,271.78, 135,615.18 and 53,559.78 is: 73,912.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,271.78 : 135,615.18 = 53,559.78 : x
  2. Step 2: Convert to fraction form
    98,271.78/135,615.18 = 53,559.78/x
  3. Step 3: Cross multiply
    98,271.78x = 135,615.18 × 53,559.78
  4. Step 4: Simplify right side
    98,271.78x = 7,263,519,205.46
  5. Step 5: Solve for x
    x = 7,263,519,205.46/98,271.78
  6. Step 6: Final answer
    x = 73,912.56

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1.5x scale

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.