Home / 55,139.67-76,110.08-31,282.20

Finding the Fourth Proportional to 55,139.67, 76,110.08 and 31,282.20

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Solution

The fourth proportional to 55,139.67, 76,110.08 and 31,282.20 is: 43,179.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,139.67 : 76,110.08 = 31,282.20 : x
  2. Step 2: Convert to fraction form
    55,139.67/76,110.08 = 31,282.20/x
  3. Step 3: Cross multiply
    55,139.67x = 76,110.08 × 31,282.20
  4. Step 4: Simplify right side
    55,139.67x = 2,380,890,744.58
  5. Step 5: Solve for x
    x = 2,380,890,744.58/55,139.67
  6. Step 6: Final answer
    x = 43,179.27

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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.