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Finding the Fourth Proportional to 68,776.76, 102,699.44 and 54,577.40

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Solution

The fourth proportional to 68,776.76, 102,699.44 and 54,577.40 is: 81,496.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,776.76 : 102,699.44 = 54,577.40 : x
  2. Step 2: Convert to fraction form
    68,776.76/102,699.44 = 54,577.40/x
  3. Step 3: Cross multiply
    68,776.76x = 102,699.44 × 54,577.40
  4. Step 4: Simplify right side
    68,776.76x = 5,605,068,416.66
  5. Step 5: Solve for x
    x = 5,605,068,416.66/68,776.76
  6. Step 6: Final answer
    x = 81,496.55

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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.