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Finding the Fourth Proportional to 75,915.56, 113,093.92 and 72,503.84

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Solution

The fourth proportional to 75,915.56, 113,093.92 and 72,503.84 is: 108,011.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,915.56 : 113,093.92 = 72,503.84 : x
  2. Step 2: Convert to fraction form
    75,915.56/113,093.92 = 72,503.84/x
  3. Step 3: Cross multiply
    75,915.56x = 113,093.92 × 72,503.84
  4. Step 4: Simplify right side
    75,915.56x = 8,199,743,480.65
  5. Step 5: Solve for x
    x = 8,199,743,480.65/75,915.56
  6. Step 6: Final answer
    x = 108,011.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.