Home / 52,103.52-78,139.32-18,819.48

Finding the Fourth Proportional to 52,103.52, 78,139.32 and 18,819.48

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Solution

The fourth proportional to 52,103.52, 78,139.32 and 18,819.48 is: 28,223.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,103.52 : 78,139.32 = 18,819.48 : x
  2. Step 2: Convert to fraction form
    52,103.52/78,139.32 = 18,819.48/x
  3. Step 3: Cross multiply
    52,103.52x = 78,139.32 × 18,819.48
  4. Step 4: Simplify right side
    52,103.52x = 1,470,541,369.95
  5. Step 5: Solve for x
    x = 1,470,541,369.95/52,103.52
  6. Step 6: Final answer
    x = 28,223.46

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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.