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Finding the Fourth Proportional to 68,736.48, 103,572.96 and 56,529.90

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Solution

The fourth proportional to 68,736.48, 103,572.96 and 56,529.90 is: 85,179.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,736.48 : 103,572.96 = 56,529.90 : x
  2. Step 2: Convert to fraction form
    68,736.48/103,572.96 = 56,529.90/x
  3. Step 3: Cross multiply
    68,736.48x = 103,572.96 × 56,529.90
  4. Step 4: Simplify right side
    68,736.48x = 5,854,969,071.50
  5. Step 5: Solve for x
    x = 5,854,969,071.50/68,736.48
  6. Step 6: Final answer
    x = 85,179.94

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.