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Finding the Fourth Proportional to 68,128.60, 102,047.10 and 56,464.60

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Solution

The fourth proportional to 68,128.60, 102,047.10 and 56,464.60 is: 84,576.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,128.60 : 102,047.10 = 56,464.60 : x
  2. Step 2: Convert to fraction form
    68,128.60/102,047.10 = 56,464.60/x
  3. Step 3: Cross multiply
    68,128.60x = 102,047.10 × 56,464.60
  4. Step 4: Simplify right side
    68,128.60x = 5,762,048,682.66
  5. Step 5: Solve for x
    x = 5,762,048,682.66/68,128.60
  6. Step 6: Final answer
    x = 84,576.06

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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.