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Finding the Fourth Proportional to 75,243.68, 103,837.20 and 43,419.20

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Solution

The fourth proportional to 75,243.68, 103,837.20 and 43,419.20 is: 59,919.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,243.68 : 103,837.20 = 43,419.20 : x
  2. Step 2: Convert to fraction form
    75,243.68/103,837.20 = 43,419.20/x
  3. Step 3: Cross multiply
    75,243.68x = 103,837.20 × 43,419.20
  4. Step 4: Simplify right side
    75,243.68x = 4,508,528,154.24
  5. Step 5: Solve for x
    x = 4,508,528,154.24/75,243.68
  6. Step 6: Final answer
    x = 59,919.03

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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.