Home / 84,000.38-125,997.32-20,820.65

Finding the Fourth Proportional to 84,000.38, 125,997.32 and 20,820.65

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Solution

The fourth proportional to 84,000.38, 125,997.32 and 20,820.65 is: 31,230.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,000.38 : 125,997.32 = 20,820.65 : x
  2. Step 2: Convert to fraction form
    84,000.38/125,997.32 = 20,820.65/x
  3. Step 3: Cross multiply
    84,000.38x = 125,997.32 × 20,820.65
  4. Step 4: Simplify right side
    84,000.38x = 2,623,345,522.72
  5. Step 5: Solve for x
    x = 2,623,345,522.72/84,000.38
  6. Step 6: Final answer
    x = 31,230.16

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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.