Home / 91,238,121.46-125,909,212.19-49,422,186.78

Finding the Fourth Proportional to 91,238,121.46, 125,909,212.19 and 49,422,186.78

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Solution

The fourth proportional to 91,238,121.46, 125,909,212.19 and 49,422,186.78 is: 68,202,945.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,238,121.46 : 125,909,212.19 = 49,422,186.78 : x
  2. Step 2: Convert to fraction form
    91,238,121.46/125,909,212.19 = 49,422,186.78/x
  3. Step 3: Cross multiply
    91,238,121.46x = 125,909,212.19 × 49,422,186.78
  4. Step 4: Simplify right side
    91,238,121.46x = 6,222,708,602,228,869
  5. Step 5: Solve for x
    x = 6,222,708,602,228,869/91,238,121.46
  6. Step 6: Final answer
    x = 68,202,945.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.