Home / 82,319.90-123,480.45-23,161.55

Finding the Fourth Proportional to 82,319.90, 123,480.45 and 23,161.55

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Solution

The fourth proportional to 82,319.90, 123,480.45 and 23,161.55 is: 34,742.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,319.90 : 123,480.45 = 23,161.55 : x
  2. Step 2: Convert to fraction form
    82,319.90/123,480.45 = 23,161.55/x
  3. Step 3: Cross multiply
    82,319.90x = 123,480.45 × 23,161.55
  4. Step 4: Simplify right side
    82,319.90x = 2,859,997,999.30
  5. Step 5: Solve for x
    x = 2,859,997,999.30/82,319.90
  6. Step 6: Final answer
    x = 34,742.49

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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.