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Finding the Fourth Proportional to 57,756.63, 86,634.89 and 21,739.82

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Solution

The fourth proportional to 57,756.63, 86,634.89 and 21,739.82 is: 32,609.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,756.63 : 86,634.89 = 21,739.82 : x
  2. Step 2: Convert to fraction form
    57,756.63/86,634.89 = 21,739.82/x
  3. Step 3: Cross multiply
    57,756.63x = 86,634.89 × 21,739.82
  4. Step 4: Simplify right side
    57,756.63x = 1,883,426,535.49
  5. Step 5: Solve for x
    x = 1,883,426,535.49/57,756.63
  6. Step 6: Final answer
    x = 32,609.70

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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.