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Finding the Fourth Proportional to 73,211.10, 109,828.80 and 28,839.30

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Solution

The fourth proportional to 73,211.10, 109,828.80 and 28,839.30 is: 43,263.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,211.10 : 109,828.80 = 28,839.30 : x
  2. Step 2: Convert to fraction form
    73,211.10/109,828.80 = 28,839.30/x
  3. Step 3: Cross multiply
    73,211.10x = 109,828.80 × 28,839.30
  4. Step 4: Simplify right side
    73,211.10x = 3,167,385,711.84
  5. Step 5: Solve for x
    x = 3,167,385,711.84/73,211.10
  6. Step 6: Final answer
    x = 43,263.74

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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.