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Finding the Fourth Proportional to 75,260.63, 103,858.73 and 43,428.85

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Solution

The fourth proportional to 75,260.63, 103,858.73 and 43,428.85 is: 59,931.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,260.63 : 103,858.73 = 43,428.85 : x
  2. Step 2: Convert to fraction form
    75,260.63/103,858.73 = 43,428.85/x
  3. Step 3: Cross multiply
    75,260.63x = 103,858.73 × 43,428.85
  4. Step 4: Simplify right side
    75,260.63x = 4,510,465,206.36
  5. Step 5: Solve for x
    x = 4,510,465,206.36/75,260.63
  6. Step 6: Final answer
    x = 59,931.27

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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.