Home / 76,885.92-115,228.40-39,414.24

Finding the Fourth Proportional to 76,885.92, 115,228.40 and 39,414.24

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Solution

The fourth proportional to 76,885.92, 115,228.40 and 39,414.24 is: 59,069.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,885.92 : 115,228.40 = 39,414.24 : x
  2. Step 2: Convert to fraction form
    76,885.92/115,228.40 = 39,414.24/x
  3. Step 3: Cross multiply
    76,885.92x = 115,228.40 × 39,414.24
  4. Step 4: Simplify right side
    76,885.92x = 4,541,639,812.42
  5. Step 5: Solve for x
    x = 4,541,639,812.42/76,885.92
  6. Step 6: Final answer
    x = 59,069.85

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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.