Home / 80,886.20-111,547.94-55,429.52

Finding the Fourth Proportional to 80,886.20, 111,547.94 and 55,429.52

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Solution

The fourth proportional to 80,886.20, 111,547.94 and 55,429.52 is: 76,441.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,886.20 : 111,547.94 = 55,429.52 : x
  2. Step 2: Convert to fraction form
    80,886.20/111,547.94 = 55,429.52/x
  3. Step 3: Cross multiply
    80,886.20x = 111,547.94 × 55,429.52
  4. Step 4: Simplify right side
    80,886.20x = 6,183,047,936.30
  5. Step 5: Solve for x
    x = 6,183,047,936.30/80,886.20
  6. Step 6: Final answer
    x = 76,441.33

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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.