Home / 55,281.47-76,288.46-31,408.20

Finding the Fourth Proportional to 55,281.47, 76,288.46 and 31,408.20

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Solution

The fourth proportional to 55,281.47, 76,288.46 and 31,408.20 is: 43,343.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,281.47 : 76,288.46 = 31,408.20 : x
  2. Step 2: Convert to fraction form
    55,281.47/76,288.46 = 31,408.20/x
  3. Step 3: Cross multiply
    55,281.47x = 76,288.46 × 31,408.20
  4. Step 4: Simplify right side
    55,281.47x = 2,396,083,052.33
  5. Step 5: Solve for x
    x = 2,396,083,052.33/55,281.47
  6. Step 6: Final answer
    x = 43,343.33

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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.