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Finding the Fourth Proportional to 68,776, 102,698.33 and 54,576.62

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Solution

The fourth proportional to 68,776, 102,698.33 and 54,576.62 is: 81,495.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,776 : 102,698.33 = 54,576.62 : x
  2. Step 2: Convert to fraction form
    68,776/102,698.33 = 54,576.62/x
  3. Step 3: Cross multiply
    68,776x = 102,698.33 × 54,576.62
  4. Step 4: Simplify right side
    68,776x = 5,604,927,731.04
  5. Step 5: Solve for x
    x = 5,604,927,731.04/68,776
  6. Step 6: Final answer
    x = 81,495.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.