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Finding the Fourth Proportional to 61,080.86, 91,635.60 and 18,958.88

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Solution

The fourth proportional to 61,080.86, 91,635.60 and 18,958.88 is: 28,442.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,080.86 : 91,635.60 = 18,958.88 : x
  2. Step 2: Convert to fraction form
    61,080.86/91,635.60 = 18,958.88/x
  3. Step 3: Cross multiply
    61,080.86x = 91,635.60 × 18,958.88
  4. Step 4: Simplify right side
    61,080.86x = 1,737,308,344.13
  5. Step 5: Solve for x
    x = 1,737,308,344.13/61,080.86
  6. Step 6: Final answer
    x = 28,442.76

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1.5x scale

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.