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Finding the Fourth Proportional to 64,971.06, 89,644.74 and 36,671.28

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Solution

The fourth proportional to 64,971.06, 89,644.74 and 36,671.28 is: 50,597.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,971.06 : 89,644.74 = 36,671.28 : x
  2. Step 2: Convert to fraction form
    64,971.06/89,644.74 = 36,671.28/x
  3. Step 3: Cross multiply
    64,971.06x = 89,644.74 × 36,671.28
  4. Step 4: Simplify right side
    64,971.06x = 3,287,387,361.07
  5. Step 5: Solve for x
    x = 3,287,387,361.07/64,971.06
  6. Step 6: Final answer
    x = 50,597.72

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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.