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Finding the Fourth Proportional to 45,357.47, 68,060.81 and 21,983.91

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Solution

The fourth proportional to 45,357.47, 68,060.81 and 21,983.91 is: 32,987.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,357.47 : 68,060.81 = 21,983.91 : x
  2. Step 2: Convert to fraction form
    45,357.47/68,060.81 = 21,983.91/x
  3. Step 3: Cross multiply
    45,357.47x = 68,060.81 × 21,983.91
  4. Step 4: Simplify right side
    45,357.47x = 1,496,242,397.64
  5. Step 5: Solve for x
    x = 1,496,242,397.64/45,357.47
  6. Step 6: Final answer
    x = 32,987.78

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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.