Home / 55,776.23-76,949.30-31,890.09

Finding the Fourth Proportional to 55,776.23, 76,949.30 and 31,890.09

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Solution

The fourth proportional to 55,776.23, 76,949.30 and 31,890.09 is: 43,995.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,776.23 : 76,949.30 = 31,890.09 : x
  2. Step 2: Convert to fraction form
    55,776.23/76,949.30 = 31,890.09/x
  3. Step 3: Cross multiply
    55,776.23x = 76,949.30 × 31,890.09
  4. Step 4: Simplify right side
    55,776.23x = 2,453,920,102.44
  5. Step 5: Solve for x
    x = 2,453,920,102.44/55,776.23
  6. Step 6: Final answer
    x = 43,995.80

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1.5x scale

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.