Home / 86,911.12-119,934.30-49,184.56

Finding the Fourth Proportional to 86,911.12, 119,934.30 and 49,184.56

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Solution

The fourth proportional to 86,911.12, 119,934.30 and 49,184.56 is: 67,872.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,911.12 : 119,934.30 = 49,184.56 : x
  2. Step 2: Convert to fraction form
    86,911.12/119,934.30 = 49,184.56/x
  3. Step 3: Cross multiply
    86,911.12x = 119,934.30 × 49,184.56
  4. Step 4: Simplify right side
    86,911.12x = 5,898,915,774.41
  5. Step 5: Solve for x
    x = 5,898,915,774.41/86,911.12
  6. Step 6: Final answer
    x = 67,872.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.