Home / 51,203.20-76,862.40-30,438.40

Finding the Fourth Proportional to 51,203.20, 76,862.40 and 30,438.40

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Solution

The fourth proportional to 51,203.20, 76,862.40 and 30,438.40 is: 45,691.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,203.20 : 76,862.40 = 30,438.40 : x
  2. Step 2: Convert to fraction form
    51,203.20/76,862.40 = 30,438.40/x
  3. Step 3: Cross multiply
    51,203.20x = 76,862.40 × 30,438.40
  4. Step 4: Simplify right side
    51,203.20x = 2,339,568,476.16
  5. Step 5: Solve for x
    x = 2,339,568,476.16/51,203.20
  6. Step 6: Final answer
    x = 45,691.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.