Home / 68,142.06-102,225.85-21,384

Finding the Fourth Proportional to 68,142.06, 102,225.85 and 21,384

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Solution

The fourth proportional to 68,142.06, 102,225.85 and 21,384 is: 32,080.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,142.06 : 102,225.85 = 21,384 : x
  2. Step 2: Convert to fraction form
    68,142.06/102,225.85 = 21,384/x
  3. Step 3: Cross multiply
    68,142.06x = 102,225.85 × 21,384
  4. Step 4: Simplify right side
    68,142.06x = 2,185,997,522.94
  5. Step 5: Solve for x
    x = 2,185,997,522.94/68,142.06
  6. Step 6: Final answer
    x = 32,080.00

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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.