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Finding the Fourth Proportional to 45,676.16, 68,518.80 and 12,396.76

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Solution

The fourth proportional to 45,676.16, 68,518.80 and 12,396.76 is: 18,596.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,676.16 : 68,518.80 = 12,396.76 : x
  2. Step 2: Convert to fraction form
    45,676.16/68,518.80 = 12,396.76/x
  3. Step 3: Cross multiply
    45,676.16x = 68,518.80 × 12,396.76
  4. Step 4: Simplify right side
    45,676.16x = 849,411,119.09
  5. Step 5: Solve for x
    x = 849,411,119.09/45,676.16
  6. Step 6: Final answer
    x = 18,596.38

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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.