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Finding the Fourth Proportional to 45,195.79, 67,794.08 and 11,920.58

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Solution

The fourth proportional to 45,195.79, 67,794.08 and 11,920.58 is: 17,880.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,195.79 : 67,794.08 = 11,920.58 : x
  2. Step 2: Convert to fraction form
    45,195.79/67,794.08 = 11,920.58/x
  3. Step 3: Cross multiply
    45,195.79x = 67,794.08 × 11,920.58
  4. Step 4: Simplify right side
    45,195.79x = 808,144,754.17
  5. Step 5: Solve for x
    x = 808,144,754.17/45,195.79
  6. Step 6: Final answer
    x = 17,880.97

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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.