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Finding the Fourth Proportional to 66,340.68, 91,551.78 and 40,837.56

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Solution

The fourth proportional to 66,340.68, 91,551.78 and 40,837.56 is: 56,356.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,340.68 : 91,551.78 = 40,837.56 : x
  2. Step 2: Convert to fraction form
    66,340.68/91,551.78 = 40,837.56/x
  3. Step 3: Cross multiply
    66,340.68x = 91,551.78 × 40,837.56
  4. Step 4: Simplify right side
    66,340.68x = 3,738,751,308.86
  5. Step 5: Solve for x
    x = 3,738,751,308.86/66,340.68
  6. Step 6: Final answer
    x = 56,356.84

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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.