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Finding the Fourth Proportional to 48,187.60, 72,259.80 and 21,878.80

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Solution

The fourth proportional to 48,187.60, 72,259.80 and 21,878.80 is: 32,808.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,187.60 : 72,259.80 = 21,878.80 : x
  2. Step 2: Convert to fraction form
    48,187.60/72,259.80 = 21,878.80/x
  3. Step 3: Cross multiply
    48,187.60x = 72,259.80 × 21,878.80
  4. Step 4: Simplify right side
    48,187.60x = 1,580,957,712.24
  5. Step 5: Solve for x
    x = 1,580,957,712.24/48,187.60
  6. Step 6: Final answer
    x = 32,808.39

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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.