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Finding the Fourth Proportional to 73,700.87, 110,550.87 and 21,110.36

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Solution

The fourth proportional to 73,700.87, 110,550.87 and 21,110.36 is: 31,665.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,700.87 : 110,550.87 = 21,110.36 : x
  2. Step 2: Convert to fraction form
    73,700.87/110,550.87 = 21,110.36/x
  3. Step 3: Cross multiply
    73,700.87x = 110,550.87 × 21,110.36
  4. Step 4: Simplify right side
    73,700.87x = 2,333,768,111.26
  5. Step 5: Solve for x
    x = 2,333,768,111.26/73,700.87
  6. Step 6: Final answer
    x = 31,665.41

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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.