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Finding the Fourth Proportional to 73,907.13, 110,861.60 and 21,317.07

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Solution

The fourth proportional to 73,907.13, 110,861.60 and 21,317.07 is: 31,975.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,907.13 : 110,861.60 = 21,317.07 : x
  2. Step 2: Convert to fraction form
    73,907.13/110,861.60 = 21,317.07/x
  3. Step 3: Cross multiply
    73,907.13x = 110,861.60 × 21,317.07
  4. Step 4: Simplify right side
    73,907.13x = 2,363,244,487.51
  5. Step 5: Solve for x
    x = 2,363,244,487.51/73,907.13
  6. Step 6: Final answer
    x = 31,975.87

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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.