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Finding the Fourth Proportional to 57,383.89, 79,188.23 and 31,889.63

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Solution

The fourth proportional to 57,383.89, 79,188.23 and 31,889.63 is: 44,006.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,383.89 : 79,188.23 = 31,889.63 : x
  2. Step 2: Convert to fraction form
    57,383.89/79,188.23 = 31,889.63/x
  3. Step 3: Cross multiply
    57,383.89x = 79,188.23 × 31,889.63
  4. Step 4: Simplify right side
    57,383.89x = 2,525,283,632.75
  5. Step 5: Solve for x
    x = 2,525,283,632.75/57,383.89
  6. Step 6: Final answer
    x = 44,006.84

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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.