Home / 55,020.79-75,928.08-31,147.26

Finding the Fourth Proportional to 55,020.79, 75,928.08 and 31,147.26

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Solution

The fourth proportional to 55,020.79, 75,928.08 and 31,147.26 is: 42,982.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,020.79 : 75,928.08 = 31,147.26 : x
  2. Step 2: Convert to fraction form
    55,020.79/75,928.08 = 31,147.26/x
  3. Step 3: Cross multiply
    55,020.79x = 75,928.08 × 31,147.26
  4. Step 4: Simplify right side
    55,020.79x = 2,364,951,649.06
  5. Step 5: Solve for x
    x = 2,364,951,649.06/55,020.79
  6. Step 6: Final answer
    x = 42,982.87

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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.