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Finding the Fourth Proportional to 84,600.90, 126,864.90 and 42,464.70

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Solution

The fourth proportional to 84,600.90, 126,864.90 and 42,464.70 is: 63,678.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,600.90 : 126,864.90 = 42,464.70 : x
  2. Step 2: Convert to fraction form
    84,600.90/126,864.90 = 42,464.70/x
  3. Step 3: Cross multiply
    84,600.90x = 126,864.90 × 42,464.70
  4. Step 4: Simplify right side
    84,600.90x = 5,387,279,919.03
  5. Step 5: Solve for x
    x = 5,387,279,919.03/84,600.90
  6. Step 6: Final answer
    x = 63,678.75

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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.