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Finding the Fourth Proportional to 64,804.95, 89,435.52 and 36,126.54

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Solution

The fourth proportional to 64,804.95, 89,435.52 and 36,126.54 is: 49,857.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,804.95 : 89,435.52 = 36,126.54 : x
  2. Step 2: Convert to fraction form
    64,804.95/89,435.52 = 36,126.54/x
  3. Step 3: Cross multiply
    64,804.95x = 89,435.52 × 36,126.54
  4. Step 4: Simplify right side
    64,804.95x = 3,230,995,890.70
  5. Step 5: Solve for x
    x = 3,230,995,890.70/64,804.95
  6. Step 6: Final answer
    x = 49,857.24

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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.