Home / 54,207.91-81,312.47-19,122.96

Finding the Fourth Proportional to 54,207.91, 81,312.47 and 19,122.96

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Solution

The fourth proportional to 54,207.91, 81,312.47 and 19,122.96 is: 28,684.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,207.91 : 81,312.47 = 19,122.96 : x
  2. Step 2: Convert to fraction form
    54,207.91/81,312.47 = 19,122.96/x
  3. Step 3: Cross multiply
    54,207.91x = 81,312.47 × 19,122.96
  4. Step 4: Simplify right side
    54,207.91x = 1,554,935,111.31
  5. Step 5: Solve for x
    x = 1,554,935,111.31/54,207.91
  6. Step 6: Final answer
    x = 28,684.65

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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.