Home / 45,712.56-68,517-19,400.88

Finding the Fourth Proportional to 45,712.56, 68,517 and 19,400.88

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Solution

The fourth proportional to 45,712.56, 68,517 and 19,400.88 is: 29,079.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,712.56 : 68,517 = 19,400.88 : x
  2. Step 2: Convert to fraction form
    45,712.56/68,517 = 19,400.88/x
  3. Step 3: Cross multiply
    45,712.56x = 68,517 × 19,400.88
  4. Step 4: Simplify right side
    45,712.56x = 1,329,290,094.96
  5. Step 5: Solve for x
    x = 1,329,290,094.96/45,712.56
  6. Step 6: Final answer
    x = 29,079.32

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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.