Home / 98,731.72-148,006.74-53,687.28

Finding the Fourth Proportional to 98,731.72, 148,006.74 and 53,687.28

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Solution

The fourth proportional to 98,731.72, 148,006.74 and 53,687.28 is: 80,481.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,731.72 : 148,006.74 = 53,687.28 : x
  2. Step 2: Convert to fraction form
    98,731.72/148,006.74 = 53,687.28/x
  3. Step 3: Cross multiply
    98,731.72x = 148,006.74 × 53,687.28
  4. Step 4: Simplify right side
    98,731.72x = 7,946,079,292.27
  5. Step 5: Solve for x
    x = 7,946,079,292.27/98,731.72
  6. Step 6: Final answer
    x = 80,481.52

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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.