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Finding the Fourth Proportional to 51,487.20, 77,230.80 and 18,244.80

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Solution

The fourth proportional to 51,487.20, 77,230.80 and 18,244.80 is: 27,367.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,487.20 : 77,230.80 = 18,244.80 : x
  2. Step 2: Convert to fraction form
    51,487.20/77,230.80 = 18,244.80/x
  3. Step 3: Cross multiply
    51,487.20x = 77,230.80 × 18,244.80
  4. Step 4: Simplify right side
    51,487.20x = 1,409,060,499.84
  5. Step 5: Solve for x
    x = 1,409,060,499.84/51,487.20
  6. Step 6: Final answer
    x = 27,367.20

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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.