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Finding the Fourth Proportional to 57,907.77, 86,833.90 and 28,290.93

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Solution

The fourth proportional to 57,907.77, 86,833.90 and 28,290.93 is: 42,422.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,907.77 : 86,833.90 = 28,290.93 : x
  2. Step 2: Convert to fraction form
    57,907.77/86,833.90 = 28,290.93/x
  3. Step 3: Cross multiply
    57,907.77x = 86,833.90 × 28,290.93
  4. Step 4: Simplify right side
    57,907.77x = 2,456,611,786.53
  5. Step 5: Solve for x
    x = 2,456,611,786.53/57,907.77
  6. Step 6: Final answer
    x = 42,422.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.