Home / 105,625.08-145,758.74-57,879

Finding the Fourth Proportional to 105,625.08, 145,758.74 and 57,879

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Solution

The fourth proportional to 105,625.08, 145,758.74 and 57,879 is: 79,870.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,625.08 : 145,758.74 = 57,879 : x
  2. Step 2: Convert to fraction form
    105,625.08/145,758.74 = 57,879/x
  3. Step 3: Cross multiply
    105,625.08x = 145,758.74 × 57,879
  4. Step 4: Simplify right side
    105,625.08x = 8,436,370,112.46
  5. Step 5: Solve for x
    x = 8,436,370,112.46/105,625.08
  6. Step 6: Final answer
    x = 79,870.90

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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.