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Finding the Fourth Proportional to 81,497.60, 122,246.40 and 46,505.60

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Solution

The fourth proportional to 81,497.60, 122,246.40 and 46,505.60 is: 69,758.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,497.60 : 122,246.40 = 46,505.60 : x
  2. Step 2: Convert to fraction form
    81,497.60/122,246.40 = 46,505.60/x
  3. Step 3: Cross multiply
    81,497.60x = 122,246.40 × 46,505.60
  4. Step 4: Simplify right side
    81,497.60x = 5,685,142,179.84
  5. Step 5: Solve for x
    x = 5,685,142,179.84/81,497.60
  6. Step 6: Final answer
    x = 69,758.40

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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.