Home / 55,278.15-76,285.89-31,408.89

Finding the Fourth Proportional to 55,278.15, 76,285.89 and 31,408.89

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Solution

The fourth proportional to 55,278.15, 76,285.89 and 31,408.89 is: 43,345.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,278.15 : 76,285.89 = 31,408.89 : x
  2. Step 2: Convert to fraction form
    55,278.15/76,285.89 = 31,408.89/x
  3. Step 3: Cross multiply
    55,278.15x = 76,285.89 × 31,408.89
  4. Step 4: Simplify right side
    55,278.15x = 2,396,055,127.56
  5. Step 5: Solve for x
    x = 2,396,055,127.56/55,278.15
  6. Step 6: Final answer
    x = 43,345.43

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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.