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Finding the Fourth Proportional to 86,940.72, 119,921.04 and 68,045.04

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Solution

The fourth proportional to 86,940.72, 119,921.04 and 68,045.04 is: 93,857.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,940.72 : 119,921.04 = 68,045.04 : x
  2. Step 2: Convert to fraction form
    86,940.72/119,921.04 = 68,045.04/x
  3. Step 3: Cross multiply
    86,940.72x = 119,921.04 × 68,045.04
  4. Step 4: Simplify right side
    86,940.72x = 8,160,031,963.64
  5. Step 5: Solve for x
    x = 8,160,031,963.64/86,940.72
  6. Step 6: Final answer
    x = 93,857.42

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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.