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Finding the Fourth Proportional to 64,684.35, 89,258.09 and 36,389.43

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Solution

The fourth proportional to 64,684.35, 89,258.09 and 36,389.43 is: 50,213.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,684.35 : 89,258.09 = 36,389.43 : x
  2. Step 2: Convert to fraction form
    64,684.35/89,258.09 = 36,389.43/x
  3. Step 3: Cross multiply
    64,684.35x = 89,258.09 × 36,389.43
  4. Step 4: Simplify right side
    64,684.35x = 3,248,050,836.04
  5. Step 5: Solve for x
    x = 3,248,050,836.04/64,684.35
  6. Step 6: Final answer
    x = 50,213.86

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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.