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Finding the Fourth Proportional to 57,135.88, 78,847.51 and 34,779.88

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Solution

The fourth proportional to 57,135.88, 78,847.51 and 34,779.88 is: 47,996.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,135.88 : 78,847.51 = 34,779.88 : x
  2. Step 2: Convert to fraction form
    57,135.88/78,847.51 = 34,779.88/x
  3. Step 3: Cross multiply
    57,135.88x = 78,847.51 × 34,779.88
  4. Step 4: Simplify right side
    57,135.88x = 2,742,306,541.86
  5. Step 5: Solve for x
    x = 2,742,306,541.86/57,135.88
  6. Step 6: Final answer
    x = 47,996.23

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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.