Home / 68,118.24-102,142.20-30,646.32

Finding the Fourth Proportional to 68,118.24, 102,142.20 and 30,646.32

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Solution

The fourth proportional to 68,118.24, 102,142.20 and 30,646.32 is: 45,953.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,118.24 : 102,142.20 = 30,646.32 : x
  2. Step 2: Convert to fraction form
    68,118.24/102,142.20 = 30,646.32/x
  3. Step 3: Cross multiply
    68,118.24x = 102,142.20 × 30,646.32
  4. Step 4: Simplify right side
    68,118.24x = 3,130,282,546.70
  5. Step 5: Solve for x
    x = 3,130,282,546.70/68,118.24
  6. Step 6: Final answer
    x = 45,953.66

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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.