Home / 52,122.21-78,182.56-12,679.39

Finding the Fourth Proportional to 52,122.21, 78,182.56 and 12,679.39

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Solution

The fourth proportional to 52,122.21, 78,182.56 and 12,679.39 is: 19,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,122.21 : 78,182.56 = 12,679.39 : x
  2. Step 2: Convert to fraction form
    52,122.21/78,182.56 = 12,679.39/x
  3. Step 3: Cross multiply
    52,122.21x = 78,182.56 × 12,679.39
  4. Step 4: Simplify right side
    52,122.21x = 991,307,169.44
  5. Step 5: Solve for x
    x = 991,307,169.44/52,122.21
  6. Step 6: Final answer
    x = 19,018.90

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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.