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Finding the Fourth Proportional to 57,332.88, 79,044 and 39,394.80

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Solution

The fourth proportional to 57,332.88, 79,044 and 39,394.80 is: 54,313.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,332.88 : 79,044 = 39,394.80 : x
  2. Step 2: Convert to fraction form
    57,332.88/79,044 = 39,394.80/x
  3. Step 3: Cross multiply
    57,332.88x = 79,044 × 39,394.80
  4. Step 4: Simplify right side
    57,332.88x = 3,113,922,571.20
  5. Step 5: Solve for x
    x = 3,113,922,571.20/57,332.88
  6. Step 6: Final answer
    x = 54,313.03

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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.