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Finding the Fourth Proportional to 40,257.20, 60,400.20 and 16,890.80

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Solution

The fourth proportional to 40,257.20, 60,400.20 and 16,890.80 is: 25,342.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,257.20 : 60,400.20 = 16,890.80 : x
  2. Step 2: Convert to fraction form
    40,257.20/60,400.20 = 16,890.80/x
  3. Step 3: Cross multiply
    40,257.20x = 60,400.20 × 16,890.80
  4. Step 4: Simplify right side
    40,257.20x = 1,020,207,698.16
  5. Step 5: Solve for x
    x = 1,020,207,698.16/40,257.20
  6. Step 6: Final answer
    x = 25,342.24

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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.