Home / 68,000.20-102,000.30-30,545.80

Finding the Fourth Proportional to 68,000.20, 102,000.30 and 30,545.80

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Solution

The fourth proportional to 68,000.20, 102,000.30 and 30,545.80 is: 45,818.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,000.20 : 102,000.30 = 30,545.80 : x
  2. Step 2: Convert to fraction form
    68,000.20/102,000.30 = 30,545.80/x
  3. Step 3: Cross multiply
    68,000.20x = 102,000.30 × 30,545.80
  4. Step 4: Simplify right side
    68,000.20x = 3,115,680,763.74
  5. Step 5: Solve for x
    x = 3,115,680,763.74/68,000.20
  6. Step 6: Final answer
    x = 45,818.70

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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.