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Finding the Fourth Proportional to 66,991.36, 92,445.66 and 37,919.10

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Solution

The fourth proportional to 66,991.36, 92,445.66 and 37,919.10 is: 52,326.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,991.36 : 92,445.66 = 37,919.10 : x
  2. Step 2: Convert to fraction form
    66,991.36/92,445.66 = 37,919.10/x
  3. Step 3: Cross multiply
    66,991.36x = 92,445.66 × 37,919.10
  4. Step 4: Simplify right side
    66,991.36x = 3,505,456,226.11
  5. Step 5: Solve for x
    x = 3,505,456,226.11/66,991.36
  6. Step 6: Final answer
    x = 52,326.99

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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.