Home / 80,983.36-121,410.40-54,357.44

Finding the Fourth Proportional to 80,983.36, 121,410.40 and 54,357.44

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Solution

The fourth proportional to 80,983.36, 121,410.40 and 54,357.44 is: 81,492.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,983.36 : 121,410.40 = 54,357.44 : x
  2. Step 2: Convert to fraction form
    80,983.36/121,410.40 = 54,357.44/x
  3. Step 3: Cross multiply
    80,983.36x = 121,410.40 × 54,357.44
  4. Step 4: Simplify right side
    80,983.36x = 6,599,558,533.38
  5. Step 5: Solve for x
    x = 6,599,558,533.38/80,983.36
  6. Step 6: Final answer
    x = 81,492.77

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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.