Home / 52,129.94-78,166.78-28,127.09

Finding the Fourth Proportional to 52,129.94, 78,166.78 and 28,127.09

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Solution

The fourth proportional to 52,129.94, 78,166.78 and 28,127.09 is: 42,175.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,129.94 : 78,166.78 = 28,127.09 : x
  2. Step 2: Convert to fraction form
    52,129.94/78,166.78 = 28,127.09/x
  3. Step 3: Cross multiply
    52,129.94x = 78,166.78 × 28,127.09
  4. Step 4: Simplify right side
    52,129.94x = 2,198,604,181.17
  5. Step 5: Solve for x
    x = 2,198,604,181.17/52,129.94
  6. Step 6: Final answer
    x = 42,175.46

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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.