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Finding the Fourth Proportional to 64,636.38, 89,206.72 and 36,347.54

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Solution

The fourth proportional to 64,636.38, 89,206.72 and 36,347.54 is: 50,164.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,636.38 : 89,206.72 = 36,347.54 : x
  2. Step 2: Convert to fraction form
    64,636.38/89,206.72 = 36,347.54/x
  3. Step 3: Cross multiply
    64,636.38x = 89,206.72 × 36,347.54
  4. Step 4: Simplify right side
    64,636.38x = 3,242,444,286.57
  5. Step 5: Solve for x
    x = 3,242,444,286.57/64,636.38
  6. Step 6: Final answer
    x = 50,164.39

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1.5x scale

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.