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Finding the Fourth Proportional to 68,320.53, 102,519.68 and 54,557.01

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Solution

The fourth proportional to 68,320.53, 102,519.68 and 54,557.01 is: 81,866.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,320.53 : 102,519.68 = 54,557.01 : x
  2. Step 2: Convert to fraction form
    68,320.53/102,519.68 = 54,557.01/x
  3. Step 3: Cross multiply
    68,320.53x = 102,519.68 × 54,557.01
  4. Step 4: Simplify right side
    68,320.53x = 5,593,166,934.17
  5. Step 5: Solve for x
    x = 5,593,166,934.17/68,320.53
  6. Step 6: Final answer
    x = 81,866.56

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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.