Home / 66,067.22-99,104.16-18,685.70

Finding the Fourth Proportional to 66,067.22, 99,104.16 and 18,685.70

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Solution

The fourth proportional to 66,067.22, 99,104.16 and 18,685.70 is: 28,029.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,067.22 : 99,104.16 = 18,685.70 : x
  2. Step 2: Convert to fraction form
    66,067.22/99,104.16 = 18,685.70/x
  3. Step 3: Cross multiply
    66,067.22x = 99,104.16 × 18,685.70
  4. Step 4: Simplify right side
    66,067.22x = 1,851,830,602.51
  5. Step 5: Solve for x
    x = 1,851,830,602.51/66,067.22
  6. Step 6: Final answer
    x = 28,029.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.