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Finding the Fourth Proportional to 75,480.88, 113,240.76 and 28,708.24

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Solution

The fourth proportional to 75,480.88, 113,240.76 and 28,708.24 is: 43,069.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,480.88 : 113,240.76 = 28,708.24 : x
  2. Step 2: Convert to fraction form
    75,480.88/113,240.76 = 28,708.24/x
  3. Step 3: Cross multiply
    75,480.88x = 113,240.76 × 28,708.24
  4. Step 4: Simplify right side
    75,480.88x = 3,250,942,915.86
  5. Step 5: Solve for x
    x = 3,250,942,915.86/75,480.88
  6. Step 6: Final answer
    x = 43,069.75

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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.