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Finding the Fourth Proportional to 57,300, 79,026.24 and 39,366.24

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Solution

The fourth proportional to 57,300, 79,026.24 and 39,366.24 is: 54,292.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,300 : 79,026.24 = 39,366.24 : x
  2. Step 2: Convert to fraction form
    57,300/79,026.24 = 39,366.24/x
  3. Step 3: Cross multiply
    57,300x = 79,026.24 × 39,366.24
  4. Step 4: Simplify right side
    57,300x = 3,110,965,930.14
  5. Step 5: Solve for x
    x = 3,110,965,930.14/57,300
  6. Step 6: Final answer
    x = 54,292.60

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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.