Home / 82,938.89-124,408.34-20,609.39

Finding the Fourth Proportional to 82,938.89, 124,408.34 and 20,609.39

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Solution

The fourth proportional to 82,938.89, 124,408.34 and 20,609.39 is: 30,914.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,938.89 : 124,408.34 = 20,609.39 : x
  2. Step 2: Convert to fraction form
    82,938.89/124,408.34 = 20,609.39/x
  3. Step 3: Cross multiply
    82,938.89x = 124,408.34 × 20,609.39
  4. Step 4: Simplify right side
    82,938.89x = 2,563,979,273.22
  5. Step 5: Solve for x
    x = 2,563,979,273.22/82,938.89
  6. Step 6: Final answer
    x = 30,914.08

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1.5x scale

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.