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Finding the Fourth Proportional to 66,482.90, 91,748.45 and 38,194.26

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Solution

The fourth proportional to 66,482.90, 91,748.45 and 38,194.26 is: 52,709.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,482.90 : 91,748.45 = 38,194.26 : x
  2. Step 2: Convert to fraction form
    66,482.90/91,748.45 = 38,194.26/x
  3. Step 3: Cross multiply
    66,482.90x = 91,748.45 × 38,194.26
  4. Step 4: Simplify right side
    66,482.90x = 3,504,264,153.90
  5. Step 5: Solve for x
    x = 3,504,264,153.90/66,482.90
  6. Step 6: Final answer
    x = 52,709.26

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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.