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Finding the Fourth Proportional to 57,879.12, 79,851.72 and 32,709.84

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Solution

The fourth proportional to 57,879.12, 79,851.72 and 32,709.84 is: 45,127.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,879.12 : 79,851.72 = 32,709.84 : x
  2. Step 2: Convert to fraction form
    57,879.12/79,851.72 = 32,709.84/x
  3. Step 3: Cross multiply
    57,879.12x = 79,851.72 × 32,709.84
  4. Step 4: Simplify right side
    57,879.12x = 2,611,936,984.92
  5. Step 5: Solve for x
    x = 2,611,936,984.92/57,879.12
  6. Step 6: Final answer
    x = 45,127.45

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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.