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Finding the Fourth Proportional to 64,586.55, 96,827.55 and 20,190.45

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Solution

The fourth proportional to 64,586.55, 96,827.55 and 20,190.45 is: 30,269.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,586.55 : 96,827.55 = 20,190.45 : x
  2. Step 2: Convert to fraction form
    64,586.55/96,827.55 = 20,190.45/x
  3. Step 3: Cross multiply
    64,586.55x = 96,827.55 × 20,190.45
  4. Step 4: Simplify right side
    64,586.55x = 1,954,992,207.86
  5. Step 5: Solve for x
    x = 1,954,992,207.86/64,586.55
  6. Step 6: Final answer
    x = 30,269.34

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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.