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Finding the Fourth Proportional to 84,035.76, 126,072.40 and 36,658.56

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Solution

The fourth proportional to 84,035.76, 126,072.40 and 36,658.56 is: 54,996.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,035.76 : 126,072.40 = 36,658.56 : x
  2. Step 2: Convert to fraction form
    84,035.76/126,072.40 = 36,658.56/x
  3. Step 3: Cross multiply
    84,035.76x = 126,072.40 × 36,658.56
  4. Step 4: Simplify right side
    84,035.76x = 4,621,632,639.74
  5. Step 5: Solve for x
    x = 4,621,632,639.74/84,035.76
  6. Step 6: Final answer
    x = 54,996.02

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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.