Home / 68,518.20-102,776.16-20,486.93

Finding the Fourth Proportional to 68,518.20, 102,776.16 and 20,486.93

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Solution

The fourth proportional to 68,518.20, 102,776.16 and 20,486.93 is: 30,730.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,518.20 : 102,776.16 = 20,486.93 : x
  2. Step 2: Convert to fraction form
    68,518.20/102,776.16 = 20,486.93/x
  3. Step 3: Cross multiply
    68,518.20x = 102,776.16 × 20,486.93
  4. Step 4: Simplify right side
    68,518.20x = 2,105,567,558.53
  5. Step 5: Solve for x
    x = 2,105,567,558.53/68,518.20
  6. Step 6: Final answer
    x = 30,730.05

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1.5x scale

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.