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Finding the Fourth Proportional to 57,906.77, 86,832.41 and 28,289.93

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Solution

The fourth proportional to 57,906.77, 86,832.41 and 28,289.93 is: 42,421.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,906.77 : 86,832.41 = 28,289.93 : x
  2. Step 2: Convert to fraction form
    57,906.77/86,832.41 = 28,289.93/x
  3. Step 3: Cross multiply
    57,906.77x = 86,832.41 × 28,289.93
  4. Step 4: Simplify right side
    57,906.77x = 2,456,482,225.02
  5. Step 5: Solve for x
    x = 2,456,482,225.02/57,906.77
  6. Step 6: Final answer
    x = 42,421.33

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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.