Home / 74,939.84-103,413.76-40,947.78

Finding the Fourth Proportional to 74,939.84, 103,413.76 and 40,947.78

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Solution

The fourth proportional to 74,939.84, 103,413.76 and 40,947.78 is: 56,506.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,939.84 : 103,413.76 = 40,947.78 : x
  2. Step 2: Convert to fraction form
    74,939.84/103,413.76 = 40,947.78/x
  3. Step 3: Cross multiply
    74,939.84x = 103,413.76 × 40,947.78
  4. Step 4: Simplify right side
    74,939.84x = 4,234,563,893.45
  5. Step 5: Solve for x
    x = 4,234,563,893.45/74,939.84
  6. Step 6: Final answer
    x = 56,506.18

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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.