Home / 55,278.31-76,286.10-31,409.02

Finding the Fourth Proportional to 55,278.31, 76,286.10 and 31,409.02

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Solution

The fourth proportional to 55,278.31, 76,286.10 and 31,409.02 is: 43,345.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,278.31 : 76,286.10 = 31,409.02 : x
  2. Step 2: Convert to fraction form
    55,278.31/76,286.10 = 31,409.02/x
  3. Step 3: Cross multiply
    55,278.31x = 76,286.10 × 31,409.02
  4. Step 4: Simplify right side
    55,278.31x = 2,396,071,640.62
  5. Step 5: Solve for x
    x = 2,396,071,640.62/55,278.31
  6. Step 6: Final answer
    x = 43,345.60

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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.