Home / 82,639,928.60-123,959,892.90-77,601,080.60

Finding the Fourth Proportional to 82,639,928.60, 123,959,892.90 and 77,601,080.60

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Solution

The fourth proportional to 82,639,928.60, 123,959,892.90 and 77,601,080.60 is: 116,401,620.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,639,928.60 : 123,959,892.90 = 77,601,080.60 : x
  2. Step 2: Convert to fraction form
    82,639,928.60/123,959,892.90 = 77,601,080.60/x
  3. Step 3: Cross multiply
    82,639,928.60x = 123,959,892.90 × 77,601,080.60
  4. Step 4: Simplify right side
    82,639,928.60x = 9,619,421,640,100,268
  5. Step 5: Solve for x
    x = 9,619,421,640,100,268/82,639,928.60
  6. Step 6: Final answer
    x = 116,401,620.90

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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.