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Finding the Fourth Proportional to 45,373.31, 68,036.53 and 20,392.01

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Solution

The fourth proportional to 45,373.31, 68,036.53 and 20,392.01 is: 30,577.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,373.31 : 68,036.53 = 20,392.01 : x
  2. Step 2: Convert to fraction form
    45,373.31/68,036.53 = 20,392.01/x
  3. Step 3: Cross multiply
    45,373.31x = 68,036.53 × 20,392.01
  4. Step 4: Simplify right side
    45,373.31x = 1,387,401,600.13
  5. Step 5: Solve for x
    x = 1,387,401,600.13/45,373.31
  6. Step 6: Final answer
    x = 30,577.48

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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.