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Finding the Fourth Proportional to 64,683.60, 89,260.40 and 36,004.72

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Solution

The fourth proportional to 64,683.60, 89,260.40 and 36,004.72 is: 49,684.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,683.60 : 89,260.40 = 36,004.72 : x
  2. Step 2: Convert to fraction form
    64,683.60/89,260.40 = 36,004.72/x
  3. Step 3: Cross multiply
    64,683.60x = 89,260.40 × 36,004.72
  4. Step 4: Simplify right side
    64,683.60x = 3,213,795,709.09
  5. Step 5: Solve for x
    x = 3,213,795,709.09/64,683.60
  6. Step 6: Final answer
    x = 49,684.86

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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.