Home / 51,729.56-71,378.15-30,513.02

Finding the Fourth Proportional to 51,729.56, 71,378.15 and 30,513.02

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Solution

The fourth proportional to 51,729.56, 71,378.15 and 30,513.02 is: 42,102.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,729.56 : 71,378.15 = 30,513.02 : x
  2. Step 2: Convert to fraction form
    51,729.56/71,378.15 = 30,513.02/x
  3. Step 3: Cross multiply
    51,729.56x = 71,378.15 × 30,513.02
  4. Step 4: Simplify right side
    51,729.56x = 2,177,962,409.06
  5. Step 5: Solve for x
    x = 2,177,962,409.06/51,729.56
  6. Step 6: Final answer
    x = 42,102.86

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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.