Home / 56,456.54-84,667.05-20,428.34

Finding the Fourth Proportional to 56,456.54, 84,667.05 and 20,428.34

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Solution

The fourth proportional to 56,456.54, 84,667.05 and 20,428.34 is: 30,636.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,456.54 : 84,667.05 = 20,428.34 : x
  2. Step 2: Convert to fraction form
    56,456.54/84,667.05 = 20,428.34/x
  3. Step 3: Cross multiply
    56,456.54x = 84,667.05 × 20,428.34
  4. Step 4: Simplify right side
    56,456.54x = 1,729,607,495.86
  5. Step 5: Solve for x
    x = 1,729,607,495.86/56,456.54
  6. Step 6: Final answer
    x = 30,636.09

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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.