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Finding the Fourth Proportional to 40,520.98, 60,669.51 and 20,756.98

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Solution

The fourth proportional to 40,520.98, 60,669.51 and 20,756.98 is: 31,078.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,520.98 : 60,669.51 = 20,756.98 : x
  2. Step 2: Convert to fraction form
    40,520.98/60,669.51 = 20,756.98/x
  3. Step 3: Cross multiply
    40,520.98x = 60,669.51 × 20,756.98
  4. Step 4: Simplify right side
    40,520.98x = 1,259,315,805.68
  5. Step 5: Solve for x
    x = 1,259,315,805.68/40,520.98
  6. Step 6: Final answer
    x = 31,078.12

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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.