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Finding the Fourth Proportional to 52,080.36, 78,119.80 and 12,637.80

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Solution

The fourth proportional to 52,080.36, 78,119.80 and 12,637.80 is: 18,956.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,080.36 : 78,119.80 = 12,637.80 : x
  2. Step 2: Convert to fraction form
    52,080.36/78,119.80 = 12,637.80/x
  3. Step 3: Cross multiply
    52,080.36x = 78,119.80 × 12,637.80
  4. Step 4: Simplify right side
    52,080.36x = 987,262,408.44
  5. Step 5: Solve for x
    x = 987,262,408.44/52,080.36
  6. Step 6: Final answer
    x = 18,956.52

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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.