Home / 105,491.16-145,577.79-57,744.54

Finding the Fourth Proportional to 105,491.16, 145,577.79 and 57,744.54

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Solution

The fourth proportional to 105,491.16, 145,577.79 and 57,744.54 is: 79,687.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,491.16 : 145,577.79 = 57,744.54 : x
  2. Step 2: Convert to fraction form
    105,491.16/145,577.79 = 57,744.54/x
  3. Step 3: Cross multiply
    105,491.16x = 145,577.79 × 57,744.54
  4. Step 4: Simplify right side
    105,491.16x = 8,406,322,517.77
  5. Step 5: Solve for x
    x = 8,406,322,517.77/105,491.16
  6. Step 6: Final answer
    x = 79,687.46

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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.