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Finding the Fourth Proportional to 45,210.96, 67,836.96 and 20,248.38

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Solution

The fourth proportional to 45,210.96, 67,836.96 and 20,248.38 is: 30,381.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,210.96 : 67,836.96 = 20,248.38 : x
  2. Step 2: Convert to fraction form
    45,210.96/67,836.96 = 20,248.38/x
  3. Step 3: Cross multiply
    45,210.96x = 67,836.96 × 20,248.38
  4. Step 4: Simplify right side
    45,210.96x = 1,373,588,544.12
  5. Step 5: Solve for x
    x = 1,373,588,544.12/45,210.96
  6. Step 6: Final answer
    x = 30,381.76

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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.