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Finding the Fourth Proportional to 51,263.80, 76,895.70 and 47,327.20

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Solution

The fourth proportional to 51,263.80, 76,895.70 and 47,327.20 is: 70,990.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,263.80 : 76,895.70 = 47,327.20 : x
  2. Step 2: Convert to fraction form
    51,263.80/76,895.70 = 47,327.20/x
  3. Step 3: Cross multiply
    51,263.80x = 76,895.70 × 47,327.20
  4. Step 4: Simplify right side
    51,263.80x = 3,639,258,173.04
  5. Step 5: Solve for x
    x = 3,639,258,173.04/51,263.80
  6. Step 6: Final answer
    x = 70,990.80

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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.