Home / 52,120.55-78,180.89-12,677.39

Finding the Fourth Proportional to 52,120.55, 78,180.89 and 12,677.39

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Solution

The fourth proportional to 52,120.55, 78,180.89 and 12,677.39 is: 19,016.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,120.55 : 78,180.89 = 12,677.39 : x
  2. Step 2: Convert to fraction form
    52,120.55/78,180.89 = 12,677.39/x
  3. Step 3: Cross multiply
    52,120.55x = 78,180.89 × 12,677.39
  4. Step 4: Simplify right side
    52,120.55x = 991,129,633.08
  5. Step 5: Solve for x
    x = 991,129,633.08/52,120.55
  6. Step 6: Final answer
    x = 19,016.10

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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.