Home / 48,390.87-72,558.05-18,774.09

Finding the Fourth Proportional to 48,390.87, 72,558.05 and 18,774.09

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Solution

The fourth proportional to 48,390.87, 72,558.05 and 18,774.09 is: 28,150.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,390.87 : 72,558.05 = 18,774.09 : x
  2. Step 2: Convert to fraction form
    48,390.87/72,558.05 = 18,774.09/x
  3. Step 3: Cross multiply
    48,390.87x = 72,558.05 × 18,774.09
  4. Step 4: Simplify right side
    48,390.87x = 1,362,211,267.05
  5. Step 5: Solve for x
    x = 1,362,211,267.05/48,390.87
  6. Step 6: Final answer
    x = 28,150.17

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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.