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Finding the Fourth Proportional to 48,472.10, 72,708.15 and 20,824.10

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Solution

The fourth proportional to 48,472.10, 72,708.15 and 20,824.10 is: 31,236.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,472.10 : 72,708.15 = 20,824.10 : x
  2. Step 2: Convert to fraction form
    48,472.10/72,708.15 = 20,824.10/x
  3. Step 3: Cross multiply
    48,472.10x = 72,708.15 × 20,824.10
  4. Step 4: Simplify right side
    48,472.10x = 1,514,081,786.42
  5. Step 5: Solve for x
    x = 1,514,081,786.42/48,472.10
  6. Step 6: Final answer
    x = 31,236.15

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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.