Home / 85,505,293.46-128,257,953.51-20,809,098.26

Finding the Fourth Proportional to 85,505,293.46, 128,257,953.51 and 20,809,098.26

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Solution

The fourth proportional to 85,505,293.46, 128,257,953.51 and 20,809,098.26 is: 31,213,650.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,505,293.46 : 128,257,953.51 = 20,809,098.26 : x
  2. Step 2: Convert to fraction form
    85,505,293.46/128,257,953.51 = 20,809,098.26/x
  3. Step 3: Cross multiply
    85,505,293.46x = 128,257,953.51 × 20,809,098.26
  4. Step 4: Simplify right side
    85,505,293.46x = 2,668,932,357,284,675
  5. Step 5: Solve for x
    x = 2,668,932,357,284,675/85,505,293.46
  6. Step 6: Final answer
    x = 31,213,650.63

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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.