Home / 55,278.22-76,286.64-31,086.79

Finding the Fourth Proportional to 55,278.22, 76,286.64 and 31,086.79

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Solution

The fourth proportional to 55,278.22, 76,286.64 and 31,086.79 is: 42,901.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,278.22 : 76,286.64 = 31,086.79 : x
  2. Step 2: Convert to fraction form
    55,278.22/76,286.64 = 31,086.79/x
  3. Step 3: Cross multiply
    55,278.22x = 76,286.64 × 31,086.79
  4. Step 4: Simplify right side
    55,278.22x = 2,371,506,421.05
  5. Step 5: Solve for x
    x = 2,371,506,421.05/55,278.22
  6. Step 6: Final answer
    x = 42,901.28

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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.