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Finding the Fourth Proportional to 45,540, 68,320.08 and 19,267.20

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Solution

The fourth proportional to 45,540, 68,320.08 and 19,267.20 is: 28,905.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,540 : 68,320.08 = 19,267.20 : x
  2. Step 2: Convert to fraction form
    45,540/68,320.08 = 19,267.20/x
  3. Step 3: Cross multiply
    45,540x = 68,320.08 × 19,267.20
  4. Step 4: Simplify right side
    45,540x = 1,316,336,645.38
  5. Step 5: Solve for x
    x = 1,316,336,645.38/45,540
  6. Step 6: Final answer
    x = 28,905.06

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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.