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Finding the Fourth Proportional to 57,800.90, 79,713.40 and 48,142.42

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Solution

The fourth proportional to 57,800.90, 79,713.40 and 48,142.42 is: 66,393.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,800.90 : 79,713.40 = 48,142.42 : x
  2. Step 2: Convert to fraction form
    57,800.90/79,713.40 = 48,142.42/x
  3. Step 3: Cross multiply
    57,800.90x = 79,713.40 × 48,142.42
  4. Step 4: Simplify right side
    57,800.90x = 3,837,595,741.72
  5. Step 5: Solve for x
    x = 3,837,595,741.72/57,800.90
  6. Step 6: Final answer
    x = 66,393.36

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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.