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Finding the Fourth Proportional to 48,411.80, 72,603.30 and 18,812.60

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Solution

The fourth proportional to 48,411.80, 72,603.30 and 18,812.60 is: 28,213.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,411.80 : 72,603.30 = 18,812.60 : x
  2. Step 2: Convert to fraction form
    48,411.80/72,603.30 = 18,812.60/x
  3. Step 3: Cross multiply
    48,411.80x = 72,603.30 × 18,812.60
  4. Step 4: Simplify right side
    48,411.80x = 1,365,856,841.58
  5. Step 5: Solve for x
    x = 1,365,856,841.58/48,411.80
  6. Step 6: Final answer
    x = 28,213.30

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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.