Home / 68,211.40-102,317.10-21,458.20

Finding the Fourth Proportional to 68,211.40, 102,317.10 and 21,458.20

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Solution

The fourth proportional to 68,211.40, 102,317.10 and 21,458.20 is: 32,187.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,211.40 : 102,317.10 = 21,458.20 : x
  2. Step 2: Convert to fraction form
    68,211.40/102,317.10 = 21,458.20/x
  3. Step 3: Cross multiply
    68,211.40x = 102,317.10 × 21,458.20
  4. Step 4: Simplify right side
    68,211.40x = 2,195,540,795.22
  5. Step 5: Solve for x
    x = 2,195,540,795.22/68,211.40
  6. Step 6: Final answer
    x = 32,187.30

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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.