Home / 48,129.87-72,207.12-18,539.76

Finding the Fourth Proportional to 48,129.87, 72,207.12 and 18,539.76

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Solution

The fourth proportional to 48,129.87, 72,207.12 and 18,539.76 is: 27,814.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,129.87 : 72,207.12 = 18,539.76 : x
  2. Step 2: Convert to fraction form
    48,129.87/72,207.12 = 18,539.76/x
  3. Step 3: Cross multiply
    48,129.87x = 72,207.12 × 18,539.76
  4. Step 4: Simplify right side
    48,129.87x = 1,338,702,675.09
  5. Step 5: Solve for x
    x = 1,338,702,675.09/48,129.87
  6. Step 6: Final answer
    x = 27,814.38

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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.