Home / 55,081.57-76,012.38-31,212.80

Finding the Fourth Proportional to 55,081.57, 76,012.38 and 31,212.80

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Solution

The fourth proportional to 55,081.57, 76,012.38 and 31,212.80 is: 43,073.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,081.57 : 76,012.38 = 31,212.80 : x
  2. Step 2: Convert to fraction form
    55,081.57/76,012.38 = 31,212.80/x
  3. Step 3: Cross multiply
    55,081.57x = 76,012.38 × 31,212.80
  4. Step 4: Simplify right side
    55,081.57x = 2,372,559,214.46
  5. Step 5: Solve for x
    x = 2,372,559,214.46/55,081.57
  6. Step 6: Final answer
    x = 43,073.56

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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.