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Finding the Fourth Proportional to 77,793.60, 116,647.20 and 30,993.60

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Solution

The fourth proportional to 77,793.60, 116,647.20 and 30,993.60 is: 46,473.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,793.60 : 116,647.20 = 30,993.60 : x
  2. Step 2: Convert to fraction form
    77,793.60/116,647.20 = 30,993.60/x
  3. Step 3: Cross multiply
    77,793.60x = 116,647.20 × 30,993.60
  4. Step 4: Simplify right side
    77,793.60x = 3,615,316,657.92
  5. Step 5: Solve for x
    x = 3,615,316,657.92/77,793.60
  6. Step 6: Final answer
    x = 46,473.19

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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.