Home / 85,109.22-127,684.08-42,885.54

Finding the Fourth Proportional to 85,109.22, 127,684.08 and 42,885.54

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Solution

The fourth proportional to 85,109.22, 127,684.08 and 42,885.54 is: 64,338.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,109.22 : 127,684.08 = 42,885.54 : x
  2. Step 2: Convert to fraction form
    85,109.22/127,684.08 = 42,885.54/x
  3. Step 3: Cross multiply
    85,109.22x = 127,684.08 × 42,885.54
  4. Step 4: Simplify right side
    85,109.22x = 5,475,800,720.20
  5. Step 5: Solve for x
    x = 5,475,800,720.20/85,109.22
  6. Step 6: Final answer
    x = 64,338.51

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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.