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Finding the Fourth Proportional to 72,796.72, 109,213.21 and 57,860.20

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Solution

The fourth proportional to 72,796.72, 109,213.21 and 57,860.20 is: 86,804.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,796.72 : 109,213.21 = 57,860.20 : x
  2. Step 2: Convert to fraction form
    72,796.72/109,213.21 = 57,860.20/x
  3. Step 3: Cross multiply
    72,796.72x = 109,213.21 × 57,860.20
  4. Step 4: Simplify right side
    72,796.72x = 6,319,098,173.24
  5. Step 5: Solve for x
    x = 6,319,098,173.24/72,796.72
  6. Step 6: Final answer
    x = 86,804.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.