Home / 55,272.89-76,278.63-31,403.61

Finding the Fourth Proportional to 55,272.89, 76,278.63 and 31,403.61

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Solution

The fourth proportional to 55,272.89, 76,278.63 and 31,403.61 is: 43,338.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,272.89 : 76,278.63 = 31,403.61 : x
  2. Step 2: Convert to fraction form
    55,272.89/76,278.63 = 31,403.61/x
  3. Step 3: Cross multiply
    55,272.89x = 76,278.63 × 31,403.61
  4. Step 4: Simplify right side
    55,272.89x = 2,395,424,347.85
  5. Step 5: Solve for x
    x = 2,395,424,347.85/55,272.89
  6. Step 6: Final answer
    x = 43,338.15

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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.