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Finding the Fourth Proportional to 71,048.48, 106,572.54 and 66,718.04

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Solution

The fourth proportional to 71,048.48, 106,572.54 and 66,718.04 is: 100,076.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,048.48 : 106,572.54 = 66,718.04 : x
  2. Step 2: Convert to fraction form
    71,048.48/106,572.54 = 66,718.04/x
  3. Step 3: Cross multiply
    71,048.48x = 106,572.54 × 66,718.04
  4. Step 4: Simplify right side
    71,048.48x = 7,110,310,986.62
  5. Step 5: Solve for x
    x = 7,110,310,986.62/71,048.48
  6. Step 6: Final answer
    x = 100,076.89

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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.