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Finding the Fourth Proportional to 57,774.80, 79,766.28 and 47,189.84

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Solution

The fourth proportional to 57,774.80, 79,766.28 and 47,189.84 is: 65,152.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,774.80 : 79,766.28 = 47,189.84 : x
  2. Step 2: Convert to fraction form
    57,774.80/79,766.28 = 47,189.84/x
  3. Step 3: Cross multiply
    57,774.80x = 79,766.28 × 47,189.84
  4. Step 4: Simplify right side
    57,774.80x = 3,764,157,990.60
  5. Step 5: Solve for x
    x = 3,764,157,990.60/57,774.80
  6. Step 6: Final answer
    x = 65,152.25

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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.