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Finding the Fourth Proportional to 85,630.97, 118,283.69 and 65,733.73

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Solution

The fourth proportional to 85,630.97, 118,283.69 and 65,733.73 is: 90,799.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,630.97 : 118,283.69 = 65,733.73 : x
  2. Step 2: Convert to fraction form
    85,630.97/118,283.69 = 65,733.73/x
  3. Step 3: Cross multiply
    85,630.97x = 118,283.69 × 65,733.73
  4. Step 4: Simplify right side
    85,630.97x = 7,775,228,010.49
  5. Step 5: Solve for x
    x = 7,775,228,010.49/85,630.97
  6. Step 6: Final answer
    x = 90,799.25

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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.