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Finding the Fourth Proportional to 70,168.65, 96,828.09 and 39,957.06

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Solution

The fourth proportional to 70,168.65, 96,828.09 and 39,957.06 is: 55,138.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,168.65 : 96,828.09 = 39,957.06 : x
  2. Step 2: Convert to fraction form
    70,168.65/96,828.09 = 39,957.06/x
  3. Step 3: Cross multiply
    70,168.65x = 96,828.09 × 39,957.06
  4. Step 4: Simplify right side
    70,168.65x = 3,868,965,801.82
  5. Step 5: Solve for x
    x = 3,868,965,801.82/70,168.65
  6. Step 6: Final answer
    x = 55,138.10

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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.