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Finding the Fourth Proportional to 64,513.90, 96,667.17 and 54,145.90

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Solution

The fourth proportional to 64,513.90, 96,667.17 and 54,145.90 is: 81,131.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,513.90 : 96,667.17 = 54,145.90 : x
  2. Step 2: Convert to fraction form
    64,513.90/96,667.17 = 54,145.90/x
  3. Step 3: Cross multiply
    64,513.90x = 96,667.17 × 54,145.90
  4. Step 4: Simplify right side
    64,513.90x = 5,234,130,920.10
  5. Step 5: Solve for x
    x = 5,234,130,920.10/64,513.90
  6. Step 6: Final answer
    x = 81,131.83

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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.