Home / 81,664.30-122,557.20-42,201.10

Finding the Fourth Proportional to 81,664.30, 122,557.20 and 42,201.10

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Solution

The fourth proportional to 81,664.30, 122,557.20 and 42,201.10 is: 63,333.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,664.30 : 122,557.20 = 42,201.10 : x
  2. Step 2: Convert to fraction form
    81,664.30/122,557.20 = 42,201.10/x
  3. Step 3: Cross multiply
    81,664.30x = 122,557.20 × 42,201.10
  4. Step 4: Simplify right side
    81,664.30x = 5,172,048,652.92
  5. Step 5: Solve for x
    x = 5,172,048,652.92/81,664.30
  6. Step 6: Final answer
    x = 63,333.04

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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.