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Finding the Fourth Proportional to 64,575.90, 96,769.08 and 45,891.90

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Solution

The fourth proportional to 64,575.90, 96,769.08 and 45,891.90 is: 68,770.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,575.90 : 96,769.08 = 45,891.90 : x
  2. Step 2: Convert to fraction form
    64,575.90/96,769.08 = 45,891.90/x
  3. Step 3: Cross multiply
    64,575.90x = 96,769.08 × 45,891.90
  4. Step 4: Simplify right side
    64,575.90x = 4,440,916,942.45
  5. Step 5: Solve for x
    x = 4,440,916,942.45/64,575.90
  6. Step 6: Final answer
    x = 68,770.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.