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Finding the Fourth Proportional to 69,328.07, 103,929.12 and 36,009.12

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Solution

The fourth proportional to 69,328.07, 103,929.12 and 36,009.12 is: 53,980.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,328.07 : 103,929.12 = 36,009.12 : x
  2. Step 2: Convert to fraction form
    69,328.07/103,929.12 = 36,009.12/x
  3. Step 3: Cross multiply
    69,328.07x = 103,929.12 × 36,009.12
  4. Step 4: Simplify right side
    69,328.07x = 3,742,396,153.57
  5. Step 5: Solve for x
    x = 3,742,396,153.57/69,328.07
  6. Step 6: Final answer
    x = 53,980.97

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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.