Home / 105,389.28-145,441.44-57,644.64

Finding the Fourth Proportional to 105,389.28, 145,441.44 and 57,644.64

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Solution

The fourth proportional to 105,389.28, 145,441.44 and 57,644.64 is: 79,551.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,389.28 : 145,441.44 = 57,644.64 : x
  2. Step 2: Convert to fraction form
    105,389.28/145,441.44 = 57,644.64/x
  3. Step 3: Cross multiply
    105,389.28x = 145,441.44 × 57,644.64
  4. Step 4: Simplify right side
    105,389.28x = 8,383,919,449.88
  5. Step 5: Solve for x
    x = 8,383,919,449.88/105,389.28
  6. Step 6: Final answer
    x = 79,551.92

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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.