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Finding the Fourth Proportional to 77,608.70, 116,413.05 and 64,486.70

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Solution

The fourth proportional to 77,608.70, 116,413.05 and 64,486.70 is: 96,730.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,608.70 : 116,413.05 = 64,486.70 : x
  2. Step 2: Convert to fraction form
    77,608.70/116,413.05 = 64,486.70/x
  3. Step 3: Cross multiply
    77,608.70x = 116,413.05 × 64,486.70
  4. Step 4: Simplify right side
    77,608.70x = 7,507,093,431.44
  5. Step 5: Solve for x
    x = 7,507,093,431.44/77,608.70
  6. Step 6: Final answer
    x = 96,730.05

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1.5x scale

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.