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Finding the Fourth Proportional to 79,866.88, 119,722.08 and 68,047.36

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Solution

The fourth proportional to 79,866.88, 119,722.08 and 68,047.36 is: 102,004.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,866.88 : 119,722.08 = 68,047.36 : x
  2. Step 2: Convert to fraction form
    79,866.88/119,722.08 = 68,047.36/x
  3. Step 3: Cross multiply
    79,866.88x = 119,722.08 × 68,047.36
  4. Step 4: Simplify right side
    79,866.88x = 8,146,771,477.71
  5. Step 5: Solve for x
    x = 8,146,771,477.71/79,866.88
  6. Step 6: Final answer
    x = 102,004.38

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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.