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Finding the Fourth Proportional to 75,216.40, 112,824.60 and 71,760.40

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Solution

The fourth proportional to 75,216.40, 112,824.60 and 71,760.40 is: 107,640.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,216.40 : 112,824.60 = 71,760.40 : x
  2. Step 2: Convert to fraction form
    75,216.40/112,824.60 = 71,760.40/x
  3. Step 3: Cross multiply
    75,216.40x = 112,824.60 × 71,760.40
  4. Step 4: Simplify right side
    75,216.40x = 8,096,338,425.84
  5. Step 5: Solve for x
    x = 8,096,338,425.84/75,216.40
  6. Step 6: Final answer
    x = 107,640.60

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1.5x scale

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.