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Finding the Fourth Proportional to 75,260.40, 103,857.84 and 43,428.48

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Solution

The fourth proportional to 75,260.40, 103,857.84 and 43,428.48 is: 59,930.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,260.40 : 103,857.84 = 43,428.48 : x
  2. Step 2: Convert to fraction form
    75,260.40/103,857.84 = 43,428.48/x
  3. Step 3: Cross multiply
    75,260.40x = 103,857.84 × 43,428.48
  4. Step 4: Simplify right side
    75,260.40x = 4,510,388,127.28
  5. Step 5: Solve for x
    x = 4,510,388,127.28/75,260.40
  6. Step 6: Final answer
    x = 59,930.43

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1.5x scale

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.