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Finding the Fourth Proportional to 48,687.72, 73,041.04 and 18,699.76

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Solution

The fourth proportional to 48,687.72, 73,041.04 and 18,699.76 is: 28,053.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,687.72 : 73,041.04 = 18,699.76 : x
  2. Step 2: Convert to fraction form
    48,687.72/73,041.04 = 18,699.76/x
  3. Step 3: Cross multiply
    48,687.72x = 73,041.04 × 18,699.76
  4. Step 4: Simplify right side
    48,687.72x = 1,365,850,065.34
  5. Step 5: Solve for x
    x = 1,365,850,065.34/48,687.72
  6. Step 6: Final answer
    x = 28,053.28

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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.