Home / 98,975.20-148,511.40-39,812.80

Finding the Fourth Proportional to 98,975.20, 148,511.40 and 39,812.80

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Solution

The fourth proportional to 98,975.20, 148,511.40 and 39,812.80 is: 59,738.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,975.20 : 148,511.40 = 39,812.80 : x
  2. Step 2: Convert to fraction form
    98,975.20/148,511.40 = 39,812.80/x
  3. Step 3: Cross multiply
    98,975.20x = 148,511.40 × 39,812.80
  4. Step 4: Simplify right side
    98,975.20x = 5,912,654,665.92
  5. Step 5: Solve for x
    x = 5,912,654,665.92/98,975.20
  6. Step 6: Final answer
    x = 59,738.75

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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.