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Finding the Fourth Proportional to 66,464.91, 91,719.41 and 37,782.81

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Solution

The fourth proportional to 66,464.91, 91,719.41 and 37,782.81 is: 52,139.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,464.91 : 91,719.41 = 37,782.81 : x
  2. Step 2: Convert to fraction form
    66,464.91/91,719.41 = 37,782.81/x
  3. Step 3: Cross multiply
    66,464.91x = 91,719.41 × 37,782.81
  4. Step 4: Simplify right side
    66,464.91x = 3,465,416,852.43
  5. Step 5: Solve for x
    x = 3,465,416,852.43/66,464.91
  6. Step 6: Final answer
    x = 52,139.04

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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.