Home / 66,042.06-91,128.38-37,742.28

Finding the Fourth Proportional to 66,042.06, 91,128.38 and 37,742.28

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Solution

The fourth proportional to 66,042.06, 91,128.38 and 37,742.28 is: 52,078.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,042.06 : 91,128.38 = 37,742.28 : x
  2. Step 2: Convert to fraction form
    66,042.06/91,128.38 = 37,742.28/x
  3. Step 3: Cross multiply
    66,042.06x = 91,128.38 × 37,742.28
  4. Step 4: Simplify right side
    66,042.06x = 3,439,392,645.20
  5. Step 5: Solve for x
    x = 3,439,392,645.20/66,042.06
  6. Step 6: Final answer
    x = 52,078.82

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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.