Home / 55,131.53-76,079.19-31,257.68

Finding the Fourth Proportional to 55,131.53, 76,079.19 and 31,257.68

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Solution

The fourth proportional to 55,131.53, 76,079.19 and 31,257.68 is: 43,134.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,131.53 : 76,079.19 = 31,257.68 : x
  2. Step 2: Convert to fraction form
    55,131.53/76,079.19 = 31,257.68/x
  3. Step 3: Cross multiply
    55,131.53x = 76,079.19 × 31,257.68
  4. Step 4: Simplify right side
    55,131.53x = 2,378,058,595.28
  5. Step 5: Solve for x
    x = 2,378,058,595.28/55,131.53
  6. Step 6: Final answer
    x = 43,134.28

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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.