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Finding the Fourth Proportional to 65,212.64, 89,992.72 and 36,918.08

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Solution

The fourth proportional to 65,212.64, 89,992.72 and 36,918.08 is: 50,946.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,212.64 : 89,992.72 = 36,918.08 : x
  2. Step 2: Convert to fraction form
    65,212.64/89,992.72 = 36,918.08/x
  3. Step 3: Cross multiply
    65,212.64x = 89,992.72 × 36,918.08
  4. Step 4: Simplify right side
    65,212.64x = 3,322,358,436.38
  5. Step 5: Solve for x
    x = 3,322,358,436.38/65,212.64
  6. Step 6: Final answer
    x = 50,946.54

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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.