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Finding the Fourth Proportional to 65,676.16, 90,636.60 and 37,390.96

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Solution

The fourth proportional to 65,676.16, 90,636.60 and 37,390.96 is: 51,601.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,676.16 : 90,636.60 = 37,390.96 : x
  2. Step 2: Convert to fraction form
    65,676.16/90,636.60 = 37,390.96/x
  3. Step 3: Cross multiply
    65,676.16x = 90,636.60 × 37,390.96
  4. Step 4: Simplify right side
    65,676.16x = 3,388,989,485.14
  5. Step 5: Solve for x
    x = 3,388,989,485.14/65,676.16
  6. Step 6: Final answer
    x = 51,601.52

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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.