Home / 68,086.10-102,129.09-20,701.58

Finding the Fourth Proportional to 68,086.10, 102,129.09 and 20,701.58

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Solution

The fourth proportional to 68,086.10, 102,129.09 and 20,701.58 is: 31,052.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,086.10 : 102,129.09 = 20,701.58 : x
  2. Step 2: Convert to fraction form
    68,086.10/102,129.09 = 20,701.58/x
  3. Step 3: Cross multiply
    68,086.10x = 102,129.09 × 20,701.58
  4. Step 4: Simplify right side
    68,086.10x = 2,114,233,526.96
  5. Step 5: Solve for x
    x = 2,114,233,526.96/68,086.10
  6. Step 6: Final answer
    x = 31,052.35

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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.