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Finding the Fourth Proportional to 64,844.64, 89,478 and 36,548.64

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Solution

The fourth proportional to 64,844.64, 89,478 and 36,548.64 is: 50,432.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,844.64 : 89,478 = 36,548.64 : x
  2. Step 2: Convert to fraction form
    64,844.64/89,478 = 36,548.64/x
  3. Step 3: Cross multiply
    64,844.64x = 89,478 × 36,548.64
  4. Step 4: Simplify right side
    64,844.64x = 3,270,299,209.92
  5. Step 5: Solve for x
    x = 3,270,299,209.92/64,844.64
  6. Step 6: Final answer
    x = 50,432.84

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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.