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Finding the Fourth Proportional to 45,191.94, 67,742.79 and 15,590.90

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Solution

The fourth proportional to 45,191.94, 67,742.79 and 15,590.90 is: 23,370.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,191.94 : 67,742.79 = 15,590.90 : x
  2. Step 2: Convert to fraction form
    45,191.94/67,742.79 = 15,590.90/x
  3. Step 3: Cross multiply
    45,191.94x = 67,742.79 × 15,590.90
  4. Step 4: Simplify right side
    45,191.94x = 1,056,170,725.90
  5. Step 5: Solve for x
    x = 1,056,170,725.90/45,191.94
  6. Step 6: Final answer
    x = 23,370.78

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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.