Home / 105,400.82-145,453.18-57,654.05

Finding the Fourth Proportional to 105,400.82, 145,453.18 and 57,654.05

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Solution

The fourth proportional to 105,400.82, 145,453.18 and 57,654.05 is: 79,562.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,400.82 : 145,453.18 = 57,654.05 : x
  2. Step 2: Convert to fraction form
    105,400.82/145,453.18 = 57,654.05/x
  3. Step 3: Cross multiply
    105,400.82x = 145,453.18 × 57,654.05
  4. Step 4: Simplify right side
    105,400.82x = 8,385,964,802.63
  5. Step 5: Solve for x
    x = 8,385,964,802.63/105,400.82
  6. Step 6: Final answer
    x = 79,562.62

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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.