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Finding the Fourth Proportional to 57,765.87, 79,683.63 and 34,779.71

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Solution

The fourth proportional to 57,765.87, 79,683.63 and 34,779.71 is: 47,975.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,765.87 : 79,683.63 = 34,779.71 : x
  2. Step 2: Convert to fraction form
    57,765.87/79,683.63 = 34,779.71/x
  3. Step 3: Cross multiply
    57,765.87x = 79,683.63 × 34,779.71
  4. Step 4: Simplify right side
    57,765.87x = 2,771,373,144.73
  5. Step 5: Solve for x
    x = 2,771,373,144.73/57,765.87
  6. Step 6: Final answer
    x = 47,975.96

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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.