Home / 56,076.34-84,089.90-20,991.39

Finding the Fourth Proportional to 56,076.34, 84,089.90 and 20,991.39

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Solution

The fourth proportional to 56,076.34, 84,089.90 and 20,991.39 is: 31,477.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,076.34 : 84,089.90 = 20,991.39 : x
  2. Step 2: Convert to fraction form
    56,076.34/84,089.90 = 20,991.39/x
  3. Step 3: Cross multiply
    56,076.34x = 84,089.90 × 20,991.39
  4. Step 4: Simplify right side
    56,076.34x = 1,765,163,781.00
  5. Step 5: Solve for x
    x = 1,765,163,781.00/56,076.34
  6. Step 6: Final answer
    x = 31,477.87

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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.