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Finding the Fourth Proportional to 66,344.63, 91,645.16 and 53,009.39

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Solution

The fourth proportional to 66,344.63, 91,645.16 and 53,009.39 is: 73,224.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,344.63 : 91,645.16 = 53,009.39 : x
  2. Step 2: Convert to fraction form
    66,344.63/91,645.16 = 53,009.39/x
  3. Step 3: Cross multiply
    66,344.63x = 91,645.16 × 53,009.39
  4. Step 4: Simplify right side
    66,344.63x = 4,858,054,028.05
  5. Step 5: Solve for x
    x = 4,858,054,028.05/66,344.63
  6. Step 6: Final answer
    x = 73,224.53

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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.