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Finding the Fourth Proportional to 68,455.56, 102,449.70 and 57,374.76

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Solution

The fourth proportional to 68,455.56, 102,449.70 and 57,374.76 is: 85,866.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,455.56 : 102,449.70 = 57,374.76 : x
  2. Step 2: Convert to fraction form
    68,455.56/102,449.70 = 57,374.76/x
  3. Step 3: Cross multiply
    68,455.56x = 102,449.70 × 57,374.76
  4. Step 4: Simplify right side
    68,455.56x = 5,878,026,949.57
  5. Step 5: Solve for x
    x = 5,878,026,949.57/68,455.56
  6. Step 6: Final answer
    x = 85,866.32

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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.