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Finding the Fourth Proportional to 77,659.80, 116,412.90 and 30,850.20

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Solution

The fourth proportional to 77,659.80, 116,412.90 and 30,850.20 is: 46,244.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,659.80 : 116,412.90 = 30,850.20 : x
  2. Step 2: Convert to fraction form
    77,659.80/116,412.90 = 30,850.20/x
  3. Step 3: Cross multiply
    77,659.80x = 116,412.90 × 30,850.20
  4. Step 4: Simplify right side
    77,659.80x = 3,591,361,247.58
  5. Step 5: Solve for x
    x = 3,591,361,247.58/77,659.80
  6. Step 6: Final answer
    x = 46,244.79

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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.