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Finding the Fourth Proportional to 67,491.81, 101,079.93 and 53,356.89

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Solution

The fourth proportional to 67,491.81, 101,079.93 and 53,356.89 is: 79,910.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,491.81 : 101,079.93 = 53,356.89 : x
  2. Step 2: Convert to fraction form
    67,491.81/101,079.93 = 53,356.89/x
  3. Step 3: Cross multiply
    67,491.81x = 101,079.93 × 53,356.89
  4. Step 4: Simplify right side
    67,491.81x = 5,393,310,706.22
  5. Step 5: Solve for x
    x = 5,393,310,706.22/67,491.81
  6. Step 6: Final answer
    x = 79,910.60

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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.