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Finding the Fourth Proportional to 45,021.90, 67,541.90 and 13,432.44

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Solution

The fourth proportional to 45,021.90, 67,541.90 and 13,432.44 is: 20,151.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,021.90 : 67,541.90 = 13,432.44 : x
  2. Step 2: Convert to fraction form
    45,021.90/67,541.90 = 13,432.44/x
  3. Step 3: Cross multiply
    45,021.90x = 67,541.90 × 13,432.44
  4. Step 4: Simplify right side
    45,021.90x = 907,252,452.07
  5. Step 5: Solve for x
    x = 907,252,452.07/45,021.90
  6. Step 6: Final answer
    x = 20,151.36

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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.