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Finding the Fourth Proportional to 66,199.78, 91,356.02 and 35,985.09

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Solution

The fourth proportional to 66,199.78, 91,356.02 and 35,985.09 is: 49,659.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,199.78 : 91,356.02 = 35,985.09 : x
  2. Step 2: Convert to fraction form
    66,199.78/91,356.02 = 35,985.09/x
  3. Step 3: Cross multiply
    66,199.78x = 91,356.02 × 35,985.09
  4. Step 4: Simplify right side
    66,199.78x = 3,287,454,899.35
  5. Step 5: Solve for x
    x = 3,287,454,899.35/66,199.78
  6. Step 6: Final answer
    x = 49,659.60

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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.