Home / 105,489.30-145,569.60-57,733.42

Finding the Fourth Proportional to 105,489.30, 145,569.60 and 57,733.42

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Solution

The fourth proportional to 105,489.30, 145,569.60 and 57,733.42 is: 79,669.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,489.30 : 145,569.60 = 57,733.42 : x
  2. Step 2: Convert to fraction form
    105,489.30/145,569.60 = 57,733.42/x
  3. Step 3: Cross multiply
    105,489.30x = 145,569.60 × 57,733.42
  4. Step 4: Simplify right side
    105,489.30x = 8,404,230,856.03
  5. Step 5: Solve for x
    x = 8,404,230,856.03/105,489.30
  6. Step 6: Final answer
    x = 79,669.04

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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.