Home / 66,021.37-91,108.87-35,807.36

Finding the Fourth Proportional to 66,021.37, 91,108.87 and 35,807.36

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Solution

The fourth proportional to 66,021.37, 91,108.87 and 35,807.36 is: 49,413.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,021.37 : 91,108.87 = 35,807.36 : x
  2. Step 2: Convert to fraction form
    66,021.37/91,108.87 = 35,807.36/x
  3. Step 3: Cross multiply
    66,021.37x = 91,108.87 × 35,807.36
  4. Step 4: Simplify right side
    66,021.37x = 3,262,367,562.22
  5. Step 5: Solve for x
    x = 3,262,367,562.22/66,021.37
  6. Step 6: Final answer
    x = 49,413.81

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1.5x scale

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.