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Finding the Fourth Proportional to 57,207.70, 85,811.55 and 57,207.70

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Solution

The fourth proportional to 57,207.70, 85,811.55 and 57,207.70 is: 85,811.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,207.70 : 85,811.55 = 57,207.70 : x
  2. Step 2: Convert to fraction form
    57,207.70/85,811.55 = 57,207.70/x
  3. Step 3: Cross multiply
    57,207.70x = 85,811.55 × 57,207.70
  4. Step 4: Simplify right side
    57,207.70x = 4,909,081,408.94
  5. Step 5: Solve for x
    x = 4,909,081,408.94/57,207.70
  6. Step 6: Final answer
    x = 85,811.55

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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.