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Finding the Fourth Proportional to 48,283.20, 72,619.20 and 43,228.80

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Solution

The fourth proportional to 48,283.20, 72,619.20 and 43,228.80 is: 65,017.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,283.20 : 72,619.20 = 43,228.80 : x
  2. Step 2: Convert to fraction form
    48,283.20/72,619.20 = 43,228.80/x
  3. Step 3: Cross multiply
    48,283.20x = 72,619.20 × 43,228.80
  4. Step 4: Simplify right side
    48,283.20x = 3,139,240,872.96
  5. Step 5: Solve for x
    x = 3,139,240,872.96/48,283.20
  6. Step 6: Final answer
    x = 65,017.25

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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.