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Finding the Fourth Proportional to 47,996.80, 72,016.80 and 16,854.40

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Solution

The fourth proportional to 47,996.80, 72,016.80 and 16,854.40 is: 25,289.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,996.80 : 72,016.80 = 16,854.40 : x
  2. Step 2: Convert to fraction form
    47,996.80/72,016.80 = 16,854.40/x
  3. Step 3: Cross multiply
    47,996.80x = 72,016.80 × 16,854.40
  4. Step 4: Simplify right side
    47,996.80x = 1,213,799,953.92
  5. Step 5: Solve for x
    x = 1,213,799,953.92/47,996.80
  6. Step 6: Final answer
    x = 25,289.18

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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.