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Finding the Fourth Proportional to 64,650, 89,207.28 and 36,355.08

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Solution

The fourth proportional to 64,650, 89,207.28 and 36,355.08 is: 50,164.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,650 : 89,207.28 = 36,355.08 : x
  2. Step 2: Convert to fraction form
    64,650/89,207.28 = 36,355.08/x
  3. Step 3: Cross multiply
    64,650x = 89,207.28 × 36,355.08
  4. Step 4: Simplify right side
    64,650x = 3,243,137,800.98
  5. Step 5: Solve for x
    x = 3,243,137,800.98/64,650
  6. Step 6: Final answer
    x = 50,164.54

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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.