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Finding the Fourth Proportional to 57,811.10, 81,110.50 and 57,811.10

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Solution

The fourth proportional to 57,811.10, 81,110.50 and 57,811.10 is: 81,110.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,811.10 : 81,110.50 = 57,811.10 : x
  2. Step 2: Convert to fraction form
    57,811.10/81,110.50 = 57,811.10/x
  3. Step 3: Cross multiply
    57,811.10x = 81,110.50 × 57,811.10
  4. Step 4: Simplify right side
    57,811.10x = 4,689,087,226.55
  5. Step 5: Solve for x
    x = 4,689,087,226.55/57,811.10
  6. Step 6: Final answer
    x = 81,110.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.