Home / 66,120.86-91,220.83-37,811.36

Finding the Fourth Proportional to 66,120.86, 91,220.83 and 37,811.36

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Solution

The fourth proportional to 66,120.86, 91,220.83 and 37,811.36 is: 52,164.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,120.86 : 91,220.83 = 37,811.36 : x
  2. Step 2: Convert to fraction form
    66,120.86/91,220.83 = 37,811.36/x
  3. Step 3: Cross multiply
    66,120.86x = 91,220.83 × 37,811.36
  4. Step 4: Simplify right side
    66,120.86x = 3,449,183,642.63
  5. Step 5: Solve for x
    x = 3,449,183,642.63/66,120.86
  6. Step 6: Final answer
    x = 52,164.83

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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.