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Finding the Fourth Proportional to 45,859.49, 68,730.02 and 20,540.51

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Solution

The fourth proportional to 45,859.49, 68,730.02 and 20,540.51 is: 30,784.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,859.49 : 68,730.02 = 20,540.51 : x
  2. Step 2: Convert to fraction form
    45,859.49/68,730.02 = 20,540.51/x
  3. Step 3: Cross multiply
    45,859.49x = 68,730.02 × 20,540.51
  4. Step 4: Simplify right side
    45,859.49x = 1,411,749,663.11
  5. Step 5: Solve for x
    x = 1,411,749,663.11/45,859.49
  6. Step 6: Final answer
    x = 30,784.24

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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.