Home / 52,105.15-78,141.76-18,821.11

Finding the Fourth Proportional to 52,105.15, 78,141.76 and 18,821.11

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Solution

The fourth proportional to 52,105.15, 78,141.76 and 18,821.11 is: 28,225.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,105.15 : 78,141.76 = 18,821.11 : x
  2. Step 2: Convert to fraction form
    52,105.15/78,141.76 = 18,821.11/x
  3. Step 3: Cross multiply
    52,105.15x = 78,141.76 × 18,821.11
  4. Step 4: Simplify right side
    52,105.15x = 1,470,714,660.55
  5. Step 5: Solve for x
    x = 1,470,714,660.55/52,105.15
  6. Step 6: Final answer
    x = 28,225.90

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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.