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Finding the Fourth Proportional to 73,269.10, 109,903.65 and 68,020.30

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Solution

The fourth proportional to 73,269.10, 109,903.65 and 68,020.30 is: 102,030.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,269.10 : 109,903.65 = 68,020.30 : x
  2. Step 2: Convert to fraction form
    73,269.10/109,903.65 = 68,020.30/x
  3. Step 3: Cross multiply
    73,269.10x = 109,903.65 × 68,020.30
  4. Step 4: Simplify right side
    73,269.10x = 7,475,679,244.10
  5. Step 5: Solve for x
    x = 7,475,679,244.10/73,269.10
  6. Step 6: Final answer
    x = 102,030.45

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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.