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Finding the Fourth Proportional to 104,287.52, 143,917.88 and 61,268.81

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Solution

The fourth proportional to 104,287.52, 143,917.88 and 61,268.81 is: 84,551.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,287.52 : 143,917.88 = 61,268.81 : x
  2. Step 2: Convert to fraction form
    104,287.52/143,917.88 = 61,268.81/x
  3. Step 3: Cross multiply
    104,287.52x = 143,917.88 × 61,268.81
  4. Step 4: Simplify right side
    104,287.52x = 8,817,676,564.03
  5. Step 5: Solve for x
    x = 8,817,676,564.03/104,287.52
  6. Step 6: Final answer
    x = 84,551.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.