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Finding the Fourth Proportional to 57,400.94, 79,208.75 and 31,905.32

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Solution

The fourth proportional to 57,400.94, 79,208.75 and 31,905.32 is: 44,026.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,400.94 : 79,208.75 = 31,905.32 : x
  2. Step 2: Convert to fraction form
    57,400.94/79,208.75 = 31,905.32/x
  3. Step 3: Cross multiply
    57,400.94x = 79,208.75 × 31,905.32
  4. Step 4: Simplify right side
    57,400.94x = 2,527,180,199.27
  5. Step 5: Solve for x
    x = 2,527,180,199.27/57,400.94
  6. Step 6: Final answer
    x = 44,026.81

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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.