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Finding the Fourth Proportional to 45,486.70, 68,230.05 and 40,675.30

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Solution

The fourth proportional to 45,486.70, 68,230.05 and 40,675.30 is: 61,012.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,486.70 : 68,230.05 = 40,675.30 : x
  2. Step 2: Convert to fraction form
    45,486.70/68,230.05 = 40,675.30/x
  3. Step 3: Cross multiply
    45,486.70x = 68,230.05 × 40,675.30
  4. Step 4: Simplify right side
    45,486.70x = 2,775,277,752.77
  5. Step 5: Solve for x
    x = 2,775,277,752.77/45,486.70
  6. Step 6: Final answer
    x = 61,012.95

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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.