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Finding the Fourth Proportional to 65,999.79, 91,080.12 and 35,784.85

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Solution

The fourth proportional to 65,999.79, 91,080.12 and 35,784.85 is: 49,383.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,999.79 : 91,080.12 = 35,784.85 : x
  2. Step 2: Convert to fraction form
    65,999.79/91,080.12 = 35,784.85/x
  3. Step 3: Cross multiply
    65,999.79x = 91,080.12 × 35,784.85
  4. Step 4: Simplify right side
    65,999.79x = 3,259,287,797.86
  5. Step 5: Solve for x
    x = 3,259,287,797.86/65,999.79
  6. Step 6: Final answer
    x = 49,383.31

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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.