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Finding the Fourth Proportional to 98,889.54, 148,359.42 and 28,768.79

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Solution

The fourth proportional to 98,889.54, 148,359.42 and 28,768.79 is: 43,160.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,889.54 : 148,359.42 = 28,768.79 : x
  2. Step 2: Convert to fraction form
    98,889.54/148,359.42 = 28,768.79/x
  3. Step 3: Cross multiply
    98,889.54x = 148,359.42 × 28,768.79
  4. Step 4: Simplify right side
    98,889.54x = 4,268,120,256.70
  5. Step 5: Solve for x
    x = 4,268,120,256.70/98,889.54
  6. Step 6: Final answer
    x = 43,160.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.