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Finding the Fourth Proportional to 57,352.71, 86,073.27 and 28,918.71

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Solution

The fourth proportional to 57,352.71, 86,073.27 and 28,918.71 is: 43,400.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,352.71 : 86,073.27 = 28,918.71 : x
  2. Step 2: Convert to fraction form
    57,352.71/86,073.27 = 28,918.71/x
  3. Step 3: Cross multiply
    57,352.71x = 86,073.27 × 28,918.71
  4. Step 4: Simplify right side
    57,352.71x = 2,489,127,933.88
  5. Step 5: Solve for x
    x = 2,489,127,933.88/57,352.71
  6. Step 6: Final answer
    x = 43,400.35

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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.