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Finding the Fourth Proportional to 57,756.80, 86,570.40 and 32,808.80

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Solution

The fourth proportional to 57,756.80, 86,570.40 and 32,808.80 is: 49,176.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,756.80 : 86,570.40 = 32,808.80 : x
  2. Step 2: Convert to fraction form
    57,756.80/86,570.40 = 32,808.80/x
  3. Step 3: Cross multiply
    57,756.80x = 86,570.40 × 32,808.80
  4. Step 4: Simplify right side
    57,756.80x = 2,840,270,939.52
  5. Step 5: Solve for x
    x = 2,840,270,939.52/57,756.80
  6. Step 6: Final answer
    x = 49,176.39

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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.