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Finding the Fourth Proportional to 53,380.88, 80,064.12 and 13,934.80

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Solution

The fourth proportional to 53,380.88, 80,064.12 and 13,934.80 is: 20,900.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,380.88 : 80,064.12 = 13,934.80 : x
  2. Step 2: Convert to fraction form
    53,380.88/80,064.12 = 13,934.80/x
  3. Step 3: Cross multiply
    53,380.88x = 80,064.12 × 13,934.80
  4. Step 4: Simplify right side
    53,380.88x = 1,115,677,499.38
  5. Step 5: Solve for x
    x = 1,115,677,499.38/53,380.88
  6. Step 6: Final answer
    x = 20,900.32

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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.