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Finding the Fourth Proportional to 48,648.60, 72,976.65 and 18,677.25

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Solution

The fourth proportional to 48,648.60, 72,976.65 and 18,677.25 is: 28,017.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,648.60 : 72,976.65 = 18,677.25 : x
  2. Step 2: Convert to fraction form
    48,648.60/72,976.65 = 18,677.25/x
  3. Step 3: Cross multiply
    48,648.60x = 72,976.65 × 18,677.25
  4. Step 4: Simplify right side
    48,648.60x = 1,363,003,136.21
  5. Step 5: Solve for x
    x = 1,363,003,136.21/48,648.60
  6. Step 6: Final answer
    x = 28,017.31

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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.