Home / 45,631.80-68,418.10-19,329.40

Finding the Fourth Proportional to 45,631.80, 68,418.10 and 19,329.40

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Solution

The fourth proportional to 45,631.80, 68,418.10 and 19,329.40 is: 28,981.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,631.80 : 68,418.10 = 19,329.40 : x
  2. Step 2: Convert to fraction form
    45,631.80/68,418.10 = 19,329.40/x
  3. Step 3: Cross multiply
    45,631.80x = 68,418.10 × 19,329.40
  4. Step 4: Simplify right side
    45,631.80x = 1,322,480,822.14
  5. Step 5: Solve for x
    x = 1,322,480,822.14/45,631.80
  6. Step 6: Final answer
    x = 28,981.56

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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.