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Finding the Fourth Proportional to 64,899, 89,560.89 and 35,091

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Solution

The fourth proportional to 64,899, 89,560.89 and 35,091 is: 48,425.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,899 : 89,560.89 = 35,091 : x
  2. Step 2: Convert to fraction form
    64,899/89,560.89 = 35,091/x
  3. Step 3: Cross multiply
    64,899x = 89,560.89 × 35,091
  4. Step 4: Simplify right side
    64,899x = 3,142,781,190.99
  5. Step 5: Solve for x
    x = 3,142,781,190.99/64,899
  6. Step 6: Final answer
    x = 48,425.73

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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.