Home / 68,159.12-102,226.34-20,762.87

Finding the Fourth Proportional to 68,159.12, 102,226.34 and 20,762.87

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Solution

The fourth proportional to 68,159.12, 102,226.34 and 20,762.87 is: 31,140.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,159.12 : 102,226.34 = 20,762.87 : x
  2. Step 2: Convert to fraction form
    68,159.12/102,226.34 = 20,762.87/x
  3. Step 3: Cross multiply
    68,159.12x = 102,226.34 × 20,762.87
  4. Step 4: Simplify right side
    68,159.12x = 2,122,511,748.77
  5. Step 5: Solve for x
    x = 2,122,511,748.77/68,159.12
  6. Step 6: Final answer
    x = 31,140.54

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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.