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Finding the Fourth Proportional to 57,757.38, 86,646.87 and 18,303.90

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Solution

The fourth proportional to 57,757.38, 86,646.87 and 18,303.90 is: 27,459.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,757.38 : 86,646.87 = 18,303.90 : x
  2. Step 2: Convert to fraction form
    57,757.38/86,646.87 = 18,303.90/x
  3. Step 3: Cross multiply
    57,757.38x = 86,646.87 × 18,303.90
  4. Step 4: Simplify right side
    57,757.38x = 1,585,975,643.79
  5. Step 5: Solve for x
    x = 1,585,975,643.79/57,757.38
  6. Step 6: Final answer
    x = 27,459.27

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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.