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Finding the Fourth Proportional to 66,491.80, 88,364.11 and 66,491.80

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Solution

The fourth proportional to 66,491.80, 88,364.11 and 66,491.80 is: 88,364.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,491.80 : 88,364.11 = 66,491.80 : x
  2. Step 2: Convert to fraction form
    66,491.80/88,364.11 = 66,491.80/x
  3. Step 3: Cross multiply
    66,491.80x = 88,364.11 × 66,491.80
  4. Step 4: Simplify right side
    66,491.80x = 5,875,488,729.30
  5. Step 5: Solve for x
    x = 5,875,488,729.30/66,491.80
  6. Step 6: Final answer
    x = 88,364.11

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.