Home / 81,699.28-122,653.87-62,991.20

Finding the Fourth Proportional to 81,699.28, 122,653.87 and 62,991.20

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Solution

The fourth proportional to 81,699.28, 122,653.87 and 62,991.20 is: 94,567.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,699.28 : 122,653.87 = 62,991.20 : x
  2. Step 2: Convert to fraction form
    81,699.28/122,653.87 = 62,991.20/x
  3. Step 3: Cross multiply
    81,699.28x = 122,653.87 × 62,991.20
  4. Step 4: Simplify right side
    81,699.28x = 7,726,114,455.94
  5. Step 5: Solve for x
    x = 7,726,114,455.94/81,699.28
  6. Step 6: Final answer
    x = 94,567.72

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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.