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Finding the Fourth Proportional to 73,485.77, 110,237.72 and 20,899.35

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Solution

The fourth proportional to 73,485.77, 110,237.72 and 20,899.35 is: 31,351.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,485.77 : 110,237.72 = 20,899.35 : x
  2. Step 2: Convert to fraction form
    73,485.77/110,237.72 = 20,899.35/x
  3. Step 3: Cross multiply
    73,485.77x = 110,237.72 × 20,899.35
  4. Step 4: Simplify right side
    73,485.77x = 2,303,896,588.99
  5. Step 5: Solve for x
    x = 2,303,896,588.99/73,485.77
  6. Step 6: Final answer
    x = 31,351.60

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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.