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Finding the Fourth Proportional to 89,551.32, 134,067.60 and 67,457.76

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Solution

The fourth proportional to 89,551.32, 134,067.60 and 67,457.76 is: 100,991.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,551.32 : 134,067.60 = 67,457.76 : x
  2. Step 2: Convert to fraction form
    89,551.32/134,067.60 = 67,457.76/x
  3. Step 3: Cross multiply
    89,551.32x = 134,067.60 × 67,457.76
  4. Step 4: Simplify right side
    89,551.32x = 9,043,899,984.58
  5. Step 5: Solve for x
    x = 9,043,899,984.58/89,551.32
  6. Step 6: Final answer
    x = 100,991.25

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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.