Home / 105,627.20-145,764.68-57,880.42

Finding the Fourth Proportional to 105,627.20, 145,764.68 and 57,880.42

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Solution

The fourth proportional to 105,627.20, 145,764.68 and 57,880.42 is: 79,874.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,627.20 : 145,764.68 = 57,880.42 : x
  2. Step 2: Convert to fraction form
    105,627.20/145,764.68 = 57,880.42/x
  3. Step 3: Cross multiply
    105,627.20x = 145,764.68 × 57,880.42
  4. Step 4: Simplify right side
    105,627.20x = 8,436,920,899.57
  5. Step 5: Solve for x
    x = 8,436,920,899.57/105,627.20
  6. Step 6: Final answer
    x = 79,874.51

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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.