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Finding the Fourth Proportional to 57,189.52, 78,907.80 and 43,775.92

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Solution

The fourth proportional to 57,189.52, 78,907.80 and 43,775.92 is: 60,400.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,189.52 : 78,907.80 = 43,775.92 : x
  2. Step 2: Convert to fraction form
    57,189.52/78,907.80 = 43,775.92/x
  3. Step 3: Cross multiply
    57,189.52x = 78,907.80 × 43,775.92
  4. Step 4: Simplify right side
    57,189.52x = 3,454,261,540.18
  5. Step 5: Solve for x
    x = 3,454,261,540.18/57,189.52
  6. Step 6: Final answer
    x = 60,400.25

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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.