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Finding the Fourth Proportional to 75,161.79, 103,697.52 and 42,873.20

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Solution

The fourth proportional to 75,161.79, 103,697.52 and 42,873.20 is: 59,150.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,161.79 : 103,697.52 = 42,873.20 : x
  2. Step 2: Convert to fraction form
    75,161.79/103,697.52 = 42,873.20/x
  3. Step 3: Cross multiply
    75,161.79x = 103,697.52 × 42,873.20
  4. Step 4: Simplify right side
    75,161.79x = 4,445,844,224.07
  5. Step 5: Solve for x
    x = 4,445,844,224.07/75,161.79
  6. Step 6: Final answer
    x = 59,150.32

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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.