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Finding the Fourth Proportional to 66,553.63, 91,844 and 38,275.72

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Solution

The fourth proportional to 66,553.63, 91,844 and 38,275.72 is: 52,820.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,553.63 : 91,844 = 38,275.72 : x
  2. Step 2: Convert to fraction form
    66,553.63/91,844 = 38,275.72/x
  3. Step 3: Cross multiply
    66,553.63x = 91,844 × 38,275.72
  4. Step 4: Simplify right side
    66,553.63x = 3,515,395,227.68
  5. Step 5: Solve for x
    x = 3,515,395,227.68/66,553.63
  6. Step 6: Final answer
    x = 52,820.49

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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.