Home / 105,626.20-145,763.30-57,879.42

Finding the Fourth Proportional to 105,626.20, 145,763.30 and 57,879.42

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Solution

The fourth proportional to 105,626.20, 145,763.30 and 57,879.42 is: 79,873.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,626.20 : 145,763.30 = 57,879.42 : x
  2. Step 2: Convert to fraction form
    105,626.20/145,763.30 = 57,879.42/x
  3. Step 3: Cross multiply
    105,626.20x = 145,763.30 × 57,879.42
  4. Step 4: Simplify right side
    105,626.20x = 8,436,695,261.29
  5. Step 5: Solve for x
    x = 8,436,695,261.29/105,626.20
  6. Step 6: Final answer
    x = 79,873.13

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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.