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Finding the Fourth Proportional to 64,868.18, 89,516.90 and 36,573.90

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Solution

The fourth proportional to 64,868.18, 89,516.90 and 36,573.90 is: 50,471.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,868.18 : 89,516.90 = 36,573.90 : x
  2. Step 2: Convert to fraction form
    64,868.18/89,516.90 = 36,573.90/x
  3. Step 3: Cross multiply
    64,868.18x = 89,516.90 × 36,573.90
  4. Step 4: Simplify right side
    64,868.18x = 3,273,982,148.91
  5. Step 5: Solve for x
    x = 3,273,982,148.91/64,868.18
  6. Step 6: Final answer
    x = 50,471.31

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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.