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Finding the Fourth Proportional to 57,433.60, 86,162.52 and 28,986.76

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Solution

The fourth proportional to 57,433.60, 86,162.52 and 28,986.76 is: 43,486.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,433.60 : 86,162.52 = 28,986.76 : x
  2. Step 2: Convert to fraction form
    57,433.60/86,162.52 = 28,986.76/x
  3. Step 3: Cross multiply
    57,433.60x = 86,162.52 × 28,986.76
  4. Step 4: Simplify right side
    57,433.60x = 2,497,572,288.24
  5. Step 5: Solve for x
    x = 2,497,572,288.24/57,433.60
  6. Step 6: Final answer
    x = 43,486.26

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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.