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Finding the Fourth Proportional to 43,273.17, 64,917.65 and 19,899

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Solution

The fourth proportional to 43,273.17, 64,917.65 and 19,899 is: 29,852.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,273.17 : 64,917.65 = 19,899 : x
  2. Step 2: Convert to fraction form
    43,273.17/64,917.65 = 19,899/x
  3. Step 3: Cross multiply
    43,273.17x = 64,917.65 × 19,899
  4. Step 4: Simplify right side
    43,273.17x = 1,291,796,367.10
  5. Step 5: Solve for x
    x = 1,291,796,367.10/43,273.17
  6. Step 6: Final answer
    x = 29,852.13

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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.