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Finding the Fourth Proportional to 66,901.60, 100,206.60 and 55,237.60

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Solution

The fourth proportional to 66,901.60, 100,206.60 and 55,237.60 is: 82,736.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,901.60 : 100,206.60 = 55,237.60 : x
  2. Step 2: Convert to fraction form
    66,901.60/100,206.60 = 55,237.60/x
  3. Step 3: Cross multiply
    66,901.60x = 100,206.60 × 55,237.60
  4. Step 4: Simplify right side
    66,901.60x = 5,535,172,088.16
  5. Step 5: Solve for x
    x = 5,535,172,088.16/66,901.60
  6. Step 6: Final answer
    x = 82,736.02

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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.