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Finding the Fourth Proportional to 98,423.70, 147,413.55 and 45,722.28

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Solution

The fourth proportional to 98,423.70, 147,413.55 and 45,722.28 is: 68,480.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,423.70 : 147,413.55 = 45,722.28 : x
  2. Step 2: Convert to fraction form
    98,423.70/147,413.55 = 45,722.28/x
  3. Step 3: Cross multiply
    98,423.70x = 147,413.55 × 45,722.28
  4. Step 4: Simplify right side
    98,423.70x = 6,740,083,608.89
  5. Step 5: Solve for x
    x = 6,740,083,608.89/98,423.70
  6. Step 6: Final answer
    x = 68,480.29

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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.