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Finding the Fourth Proportional to 73,222.40, 109,820.84 and 28,861.52

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Solution

The fourth proportional to 73,222.40, 109,820.84 and 28,861.52 is: 43,287.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,222.40 : 109,820.84 = 28,861.52 : x
  2. Step 2: Convert to fraction form
    73,222.40/109,820.84 = 28,861.52/x
  3. Step 3: Cross multiply
    73,222.40x = 109,820.84 × 28,861.52
  4. Step 4: Simplify right side
    73,222.40x = 3,169,596,370.08
  5. Step 5: Solve for x
    x = 3,169,596,370.08/73,222.40
  6. Step 6: Final answer
    x = 43,287.25

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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.