Home / 77,112.05-115,668.05-43,380.30

Finding the Fourth Proportional to 77,112.05, 115,668.05 and 43,380.30

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Solution

The fourth proportional to 77,112.05, 115,668.05 and 43,380.30 is: 65,070.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,112.05 : 115,668.05 = 43,380.30 : x
  2. Step 2: Convert to fraction form
    77,112.05/115,668.05 = 43,380.30/x
  3. Step 3: Cross multiply
    77,112.05x = 115,668.05 × 43,380.30
  4. Step 4: Simplify right side
    77,112.05x = 5,017,714,817.87
  5. Step 5: Solve for x
    x = 5,017,714,817.87/77,112.05
  6. Step 6: Final answer
    x = 65,070.44

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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.