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Finding the Fourth Proportional to 66,414.64, 91,649.44 and 36,199.28

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Solution

The fourth proportional to 66,414.64, 91,649.44 and 36,199.28 is: 49,953.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,414.64 : 91,649.44 = 36,199.28 : x
  2. Step 2: Convert to fraction form
    66,414.64/91,649.44 = 36,199.28/x
  3. Step 3: Cross multiply
    66,414.64x = 91,649.44 × 36,199.28
  4. Step 4: Simplify right side
    66,414.64x = 3,317,643,740.40
  5. Step 5: Solve for x
    x = 3,317,643,740.40/66,414.64
  6. Step 6: Final answer
    x = 49,953.50

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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.