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Finding the Fourth Proportional to 81,277.99, 112,202.78 and 54,099.30

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Solution

The fourth proportional to 81,277.99, 112,202.78 and 54,099.30 is: 74,683.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,277.99 : 112,202.78 = 54,099.30 : x
  2. Step 2: Convert to fraction form
    81,277.99/112,202.78 = 54,099.30/x
  3. Step 3: Cross multiply
    81,277.99x = 112,202.78 × 54,099.30
  4. Step 4: Simplify right side
    81,277.99x = 6,070,091,856.05
  5. Step 5: Solve for x
    x = 6,070,091,856.05/81,277.99
  6. Step 6: Final answer
    x = 74,683.10

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1.5x scale

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.