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Finding the Fourth Proportional to 66,396.43, 91,623.54 and 38,100.25

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Solution

The fourth proportional to 66,396.43, 91,623.54 and 38,100.25 is: 52,576.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,396.43 : 91,623.54 = 38,100.25 : x
  2. Step 2: Convert to fraction form
    66,396.43/91,623.54 = 38,100.25/x
  3. Step 3: Cross multiply
    66,396.43x = 91,623.54 × 38,100.25
  4. Step 4: Simplify right side
    66,396.43x = 3,490,879,779.89
  5. Step 5: Solve for x
    x = 3,490,879,779.89/66,396.43
  6. Step 6: Final answer
    x = 52,576.32

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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.