Home / 66,120.36-91,220.14-37,810.86

Finding the Fourth Proportional to 66,120.36, 91,220.14 and 37,810.86

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Solution

The fourth proportional to 66,120.36, 91,220.14 and 37,810.86 is: 52,164.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,120.36 : 91,220.14 = 37,810.86 : x
  2. Step 2: Convert to fraction form
    66,120.36/91,220.14 = 37,810.86/x
  3. Step 3: Cross multiply
    66,120.36x = 91,220.14 × 37,810.86
  4. Step 4: Simplify right side
    66,120.36x = 3,449,111,942.72
  5. Step 5: Solve for x
    x = 3,449,111,942.72/66,120.36
  6. Step 6: Final answer
    x = 52,164.14

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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.