Home / 81,905.17-122,875.30-46,383.28

Finding the Fourth Proportional to 81,905.17, 122,875.30 and 46,383.28

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Solution

The fourth proportional to 81,905.17, 122,875.30 and 46,383.28 is: 69,584.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,905.17 : 122,875.30 = 46,383.28 : x
  2. Step 2: Convert to fraction form
    81,905.17/122,875.30 = 46,383.28/x
  3. Step 3: Cross multiply
    81,905.17x = 122,875.30 × 46,383.28
  4. Step 4: Simplify right side
    81,905.17x = 5,699,359,410.91
  5. Step 5: Solve for x
    x = 5,699,359,410.91/81,905.17
  6. Step 6: Final answer
    x = 69,584.85

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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.