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Finding the Fourth Proportional to 57,881.60, 86,822.40 and 50,739.20

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Solution

The fourth proportional to 57,881.60, 86,822.40 and 50,739.20 is: 76,108.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,881.60 : 86,822.40 = 50,739.20 : x
  2. Step 2: Convert to fraction form
    57,881.60/86,822.40 = 50,739.20/x
  3. Step 3: Cross multiply
    57,881.60x = 86,822.40 × 50,739.20
  4. Step 4: Simplify right side
    57,881.60x = 4,405,299,118.08
  5. Step 5: Solve for x
    x = 4,405,299,118.08/57,881.60
  6. Step 6: Final answer
    x = 76,108.80

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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.