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Finding the Fourth Proportional to 64,879.20, 97,318.80 and 60,942.60

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Solution

The fourth proportional to 64,879.20, 97,318.80 and 60,942.60 is: 91,413.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,879.20 : 97,318.80 = 60,942.60 : x
  2. Step 2: Convert to fraction form
    64,879.20/97,318.80 = 60,942.60/x
  3. Step 3: Cross multiply
    64,879.20x = 97,318.80 × 60,942.60
  4. Step 4: Simplify right side
    64,879.20x = 5,930,860,700.88
  5. Step 5: Solve for x
    x = 5,930,860,700.88/64,879.20
  6. Step 6: Final answer
    x = 91,413.90

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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.