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Finding the Fourth Proportional to 66,423.56, 91,662.67 and 36,209.47

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Solution

The fourth proportional to 66,423.56, 91,662.67 and 36,209.47 is: 49,968.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,423.56 : 91,662.67 = 36,209.47 : x
  2. Step 2: Convert to fraction form
    66,423.56/91,662.67 = 36,209.47/x
  3. Step 3: Cross multiply
    66,423.56x = 91,662.67 × 36,209.47
  4. Step 4: Simplify right side
    66,423.56x = 3,319,056,699.48
  5. Step 5: Solve for x
    x = 3,319,056,699.48/66,423.56
  6. Step 6: Final answer
    x = 49,968.06

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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.