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Finding the Fourth Proportional to 48,627.87, 72,887.59 and 20,539.50

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Solution

The fourth proportional to 48,627.87, 72,887.59 and 20,539.50 is: 30,786.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,627.87 : 72,887.59 = 20,539.50 : x
  2. Step 2: Convert to fraction form
    48,627.87/72,887.59 = 20,539.50/x
  3. Step 3: Cross multiply
    48,627.87x = 72,887.59 × 20,539.50
  4. Step 4: Simplify right side
    48,627.87x = 1,497,074,654.81
  5. Step 5: Solve for x
    x = 1,497,074,654.81/48,627.87
  6. Step 6: Final answer
    x = 30,786.35

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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.