Home / 45,111.80-67,654.56-13,520.60

Finding the Fourth Proportional to 45,111.80, 67,654.56 and 13,520.60

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Solution

The fourth proportional to 45,111.80, 67,654.56 and 13,520.60 is: 20,276.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,111.80 : 67,654.56 = 13,520.60 : x
  2. Step 2: Convert to fraction form
    45,111.80/67,654.56 = 13,520.60/x
  3. Step 3: Cross multiply
    45,111.80x = 67,654.56 × 13,520.60
  4. Step 4: Simplify right side
    45,111.80x = 914,730,243.94
  5. Step 5: Solve for x
    x = 914,730,243.94/45,111.80
  6. Step 6: Final answer
    x = 20,276.96

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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.