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Finding the Fourth Proportional to 56,460.30, 84,636.45 and 20,912.10

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Solution

The fourth proportional to 56,460.30, 84,636.45 and 20,912.10 is: 31,348.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,460.30 : 84,636.45 = 20,912.10 : x
  2. Step 2: Convert to fraction form
    56,460.30/84,636.45 = 20,912.10/x
  3. Step 3: Cross multiply
    56,460.30x = 84,636.45 × 20,912.10
  4. Step 4: Simplify right side
    56,460.30x = 1,769,925,906.05
  5. Step 5: Solve for x
    x = 1,769,925,906.05/56,460.30
  6. Step 6: Final answer
    x = 31,348.15

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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.