Home / 105,620.11-145,759.17-57,876.53

Finding the Fourth Proportional to 105,620.11, 145,759.17 and 57,876.53

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Solution

The fourth proportional to 105,620.11, 145,759.17 and 57,876.53 is: 79,871.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,620.11 : 145,759.17 = 57,876.53 : x
  2. Step 2: Convert to fraction form
    105,620.11/145,759.17 = 57,876.53/x
  3. Step 3: Cross multiply
    105,620.11x = 145,759.17 × 57,876.53
  4. Step 4: Simplify right side
    105,620.11x = 8,436,035,339.68
  5. Step 5: Solve for x
    x = 8,436,035,339.68/105,620.11
  6. Step 6: Final answer
    x = 79,871.49

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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.