Home / 69,328.64-103,981.92-19,403.36

Finding the Fourth Proportional to 69,328.64, 103,981.92 and 19,403.36

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Solution

The fourth proportional to 69,328.64, 103,981.92 and 19,403.36 is: 29,101.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,328.64 : 103,981.92 = 19,403.36 : x
  2. Step 2: Convert to fraction form
    69,328.64/103,981.92 = 19,403.36/x
  3. Step 3: Cross multiply
    69,328.64x = 103,981.92 × 19,403.36
  4. Step 4: Simplify right side
    69,328.64x = 2,017,598,627.25
  5. Step 5: Solve for x
    x = 2,017,598,627.25/69,328.64
  6. Step 6: Final answer
    x = 29,101.95

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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.