Home / 56,456.20-84,717.90-21,399.40

Finding the Fourth Proportional to 56,456.20, 84,717.90 and 21,399.40

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Solution

The fourth proportional to 56,456.20, 84,717.90 and 21,399.40 is: 32,111.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,456.20 : 84,717.90 = 21,399.40 : x
  2. Step 2: Convert to fraction form
    56,456.20/84,717.90 = 21,399.40/x
  3. Step 3: Cross multiply
    56,456.20x = 84,717.90 × 21,399.40
  4. Step 4: Simplify right side
    56,456.20x = 1,812,912,229.26
  5. Step 5: Solve for x
    x = 1,812,912,229.26/56,456.20
  6. Step 6: Final answer
    x = 32,111.84

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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.