Home / 105,390.84-145,439.52-57,644.04

Finding the Fourth Proportional to 105,390.84, 145,439.52 and 57,644.04

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Solution

The fourth proportional to 105,390.84, 145,439.52 and 57,644.04 is: 79,548.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,390.84 : 145,439.52 = 57,644.04 : x
  2. Step 2: Convert to fraction form
    105,390.84/145,439.52 = 57,644.04/x
  3. Step 3: Cross multiply
    105,390.84x = 145,439.52 × 57,644.04
  4. Step 4: Simplify right side
    105,390.84x = 8,383,721,508.46
  5. Step 5: Solve for x
    x = 8,383,721,508.46/105,390.84
  6. Step 6: Final answer
    x = 79,548.86

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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.