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Finding the Fourth Proportional to 66,301.44, 91,487.88 and 39,445.08

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Solution

The fourth proportional to 66,301.44, 91,487.88 and 39,445.08 is: 54,429.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,301.44 : 91,487.88 = 39,445.08 : x
  2. Step 2: Convert to fraction form
    66,301.44/91,487.88 = 39,445.08/x
  3. Step 3: Cross multiply
    66,301.44x = 91,487.88 × 39,445.08
  4. Step 4: Simplify right side
    66,301.44x = 3,608,746,745.63
  5. Step 5: Solve for x
    x = 3,608,746,745.63/66,301.44
  6. Step 6: Final answer
    x = 54,429.39

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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.