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Finding the Fourth Proportional to 98,414.64, 135,800.01 and 55,388.88

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Solution

The fourth proportional to 98,414.64, 135,800.01 and 55,388.88 is: 76,429.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,414.64 : 135,800.01 = 55,388.88 : x
  2. Step 2: Convert to fraction form
    98,414.64/135,800.01 = 55,388.88/x
  3. Step 3: Cross multiply
    98,414.64x = 135,800.01 × 55,388.88
  4. Step 4: Simplify right side
    98,414.64x = 7,521,810,457.89
  5. Step 5: Solve for x
    x = 7,521,810,457.89/98,414.64
  6. Step 6: Final answer
    x = 76,429.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.