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Finding the Fourth Proportional to 64,926, 89,600.04 and 39,770.64

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Solution

The fourth proportional to 64,926, 89,600.04 and 39,770.64 is: 54,884.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,926 : 89,600.04 = 39,770.64 : x
  2. Step 2: Convert to fraction form
    64,926/89,600.04 = 39,770.64/x
  3. Step 3: Cross multiply
    64,926x = 89,600.04 × 39,770.64
  4. Step 4: Simplify right side
    64,926x = 3,563,450,934.83
  5. Step 5: Solve for x
    x = 3,563,450,934.83/64,926
  6. Step 6: Final answer
    x = 54,884.81

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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.