Home / 42,456.89-63,685.89-18,435.66

Finding the Fourth Proportional to 42,456.89, 63,685.89 and 18,435.66

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Solution

The fourth proportional to 42,456.89, 63,685.89 and 18,435.66 is: 27,653.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,456.89 : 63,685.89 = 18,435.66 : x
  2. Step 2: Convert to fraction form
    42,456.89/63,685.89 = 18,435.66/x
  3. Step 3: Cross multiply
    42,456.89x = 63,685.89 × 18,435.66
  4. Step 4: Simplify right side
    42,456.89x = 1,174,091,414.84
  5. Step 5: Solve for x
    x = 1,174,091,414.84/42,456.89
  6. Step 6: Final answer
    x = 27,653.73

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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.