Home / 72,564.82-100,138.62-40,732.90

Finding the Fourth Proportional to 72,564.82, 100,138.62 and 40,732.90

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Solution

The fourth proportional to 72,564.82, 100,138.62 and 40,732.90 is: 56,210.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,564.82 : 100,138.62 = 40,732.90 : x
  2. Step 2: Convert to fraction form
    72,564.82/100,138.62 = 40,732.90/x
  3. Step 3: Cross multiply
    72,564.82x = 100,138.62 × 40,732.90
  4. Step 4: Simplify right side
    72,564.82x = 4,078,936,394.60
  5. Step 5: Solve for x
    x = 4,078,936,394.60/72,564.82
  6. Step 6: Final answer
    x = 56,210.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.