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Finding the Fourth Proportional to 75,303.99, 112,919.61 and 43,722

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Solution

The fourth proportional to 75,303.99, 112,919.61 and 43,722 is: 65,561.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,303.99 : 112,919.61 = 43,722 : x
  2. Step 2: Convert to fraction form
    75,303.99/112,919.61 = 43,722/x
  3. Step 3: Cross multiply
    75,303.99x = 112,919.61 × 43,722
  4. Step 4: Simplify right side
    75,303.99x = 4,937,071,188.42
  5. Step 5: Solve for x
    x = 4,937,071,188.42/75,303.99
  6. Step 6: Final answer
    x = 65,561.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.