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Finding the Fourth Proportional to 68,000.20, 102,000.30 and 49,337.80

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Solution

The fourth proportional to 68,000.20, 102,000.30 and 49,337.80 is: 74,006.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,000.20 : 102,000.30 = 49,337.80 : x
  2. Step 2: Convert to fraction form
    68,000.20/102,000.30 = 49,337.80/x
  3. Step 3: Cross multiply
    68,000.20x = 102,000.30 × 49,337.80
  4. Step 4: Simplify right side
    68,000.20x = 5,032,470,401.34
  5. Step 5: Solve for x
    x = 5,032,470,401.34/68,000.20
  6. Step 6: Final answer
    x = 74,006.70

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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.