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Finding the Fourth Proportional to 45,353.76, 68,030.79 and 13,764.09

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Solution

The fourth proportional to 45,353.76, 68,030.79 and 13,764.09 is: 20,646.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,353.76 : 68,030.79 = 13,764.09 : x
  2. Step 2: Convert to fraction form
    45,353.76/68,030.79 = 13,764.09/x
  3. Step 3: Cross multiply
    45,353.76x = 68,030.79 × 13,764.09
  4. Step 4: Simplify right side
    45,353.76x = 936,381,916.33
  5. Step 5: Solve for x
    x = 936,381,916.33/45,353.76
  6. Step 6: Final answer
    x = 20,646.18

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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.