Home / 81,181.84-121,772.78-53,125.52

Finding the Fourth Proportional to 81,181.84, 121,772.78 and 53,125.52

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Solution

The fourth proportional to 81,181.84, 121,772.78 and 53,125.52 is: 79,688.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,181.84 : 121,772.78 = 53,125.52 : x
  2. Step 2: Convert to fraction form
    81,181.84/121,772.78 = 53,125.52/x
  3. Step 3: Cross multiply
    81,181.84x = 121,772.78 × 53,125.52
  4. Step 4: Simplify right side
    81,181.84x = 6,469,242,259.35
  5. Step 5: Solve for x
    x = 6,469,242,259.35/81,181.84
  6. Step 6: Final answer
    x = 79,688.29

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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.